46. Invitations and RSVPs: how to know who is really coming

The number that decides almost everything at an event is not how many people you invite: it is how many actually come. Covers are ordered on that number, tables are laid out, fees are calculated, rooms are sized. Yet it is also the number you learn latest and least reliably, because replies come late, verbally, half-formed ("maybe", "I think so", "I'll let you know").

This guide explains how to send invitations that get clear replies: when to send them, what to put in them, how to ask for an answer without nagging, what information to collect (menu, allergies, plus-ones) and how to handle it while respecting guests' privacy. It applies to a private party, a community group's event and a work meeting, in any country.

When to send invitations, by type of event

There is no rule that suits every event and every country. There is a method that always works: start from the deadlines and work backwards.

1. Find the most binding deadline: usually the date by which the restaurant, caterer or venue wants final numbers.
2. Set the reply-by date a few days before it, so you have time to chase those who have not answered.
3. Give guests time to plan: people who travel, need to book a day off or find childcare need more notice than those who live ten minutes away.

Type of event	Before the invitation	The invitation	What matters most
Wedding, large family party	A save-the-date to those who travel	With a reply-by date before the reception's deadline	Travel and accommodation for distant guests
Birthday, party with friends	Often nothing, or a poll to choose the date	Short, even by message, with a reply-by date	Knowing numbers for the food
Community group event	Announcement to members through the usual channels	With registration and, if any, a fee	Numbers for room and catering, fees collected
Work meeting or corporate event	Date blocked in participants' calendars	With programme, venue and practical details	Attendance for room, meals and materials
Public event with booking	Public announcement	Booking form with limited places	Waiting list and entry check

Example timeline (invented, to adapt): the restaurant wants final numbers ten days before the party. The reply-by date therefore goes a few days before that deadline, and the invitation goes out early enough for everyone to decide calmly. If half the guests travel, a save-the-date goes out much earlier.

If the date itself is not yet decided and some people must be there, run a poll before the invitation: two or three suggested dates, pick the one that suits most people. The guide on how to organize an event explains how to choose the date.

What to write in an invitation

A good invitation answers questions before guests ask them. The essentials:

• Who is inviting and, if it is not obvious, why ("for Luca's 40th", "to close the club's season").
• What: party, dinner, lunch, meeting, with a phrase about the kind of event (standing or seated, formal or informal).
• When: the day with the month written out, start time and, if it matters, end time. If guests are in different countries or the event is online, the time zone.
• Where: venue name, full address, how to get there, parking, step-free access.
• How to reply and by when: one simple way, and a precise date.
• Who is invited: just the person, the couple, the family with children. It is the information that, when missing, causes the most confusion.
• Practical details, if needed: dress code, gifts, fee, what to bring.
• Who to contact with questions.

A sample text (invented):

Dear Giulia, on Saturday 14 March we are celebrating Mum's 60th birthday with lunch at [restaurant name], [address], at 12:30. You are invited with Marco and the children. Could you let us know by Sunday 1 March whether you can come, how many of you there will be and whether anyone has allergies or food intolerances? Just reply to this message. The restaurant has step-free access and parking in front. No gifts, please: just come. Love, Anna

In a few lines it has everything: who, what, when, where, who is invited, how and by when to reply, the questions the restaurant needs answered and the practical information. The free event planning checklist also reminds you of invitation deadlines by type of event.

Paper or digital?

The choice depends on the guests more than on style. A paper invitation is a keepsake and, for some people, a sign that the event matters; a digital invitation arrives at once, costs little and lets people reply with one tap. Many people do both: paper for those who appreciate it (often the older members of the family), a message or email for everyone else, with the same information and the same reply-by date.

Whatever the format, replies should be collected in one place: a single list, kept up to date by one person, recording for each guest yes, no or pending, how many people and any needs. If replies reach different people (the couple, the parents, siblings), agree who copies them into the list and when.

Asking for a reply without nagging

Most people who do not reply are not being rude: they read it, thought "I'll answer later" and forgot. Three habits increase replies without becoming a burden:

• A precise date, not "when you can".
• One way to reply, as simple as possible: reply to the message, tap a link, fill in two fields.
• A closed question: "are you coming?" with three possible answers (yes, no, not sure yet, with a date by which to know), instead of "let us know".

The reminder

A few days after the reply-by date, a short message only to those who have not answered. Example (invented): "Hi Paolo, just a reminder about lunch on Saturday 14 March for Mum's 60th. We need numbers for the restaurant by Wednesday: could you let us know if you're coming? Thanks!". A concrete reason ("we need numbers for the restaurant") works better than a generic chaser. If nothing comes even after the reminder, move to a personal contact: a call or a message from whoever knows that person best.

Menu, allergies, plus-ones: the questions in the invitation

The right questions in the invitation save dozens of messages later. The most useful:

• How many of you? With plus-ones' names, if you need them for the seating plan.
• Any children? And their ages, if it changes the menu or the price.
• Allergies, intolerances, diets? One open question, not a list of checkboxes.
• For a multi-course or choice menu: meat, fish or vegetarian.
• For those who travel: whether they need help with accommodation or transport.
• Is there anything we should know to welcome you well? An open question collects access, seating or timing needs that no checkbox covers.

Allergies deserve extra care, for two reasons. The first is practical: an allergy reported with the reply must reach the cook in writing and with the person's name, not passed on verbally. Those who prepare food have rules of their own: in the European Union, allergen information is mandatory for non-prepacked foods too, including in restaurants and cafés (European Commission); in the United States the law recognizes nine major food allergens, after sesame was added to the original eight (FDA, Food Allergies). Ask the restaurant or caterer how they handle requests and give them the list by name. The second reason concerns privacy, and is explained below.

Guests who do not reply: what to do

After the reply-by date and the reminder, some people will stay silent. Two rules:

1. Silence is not a yes. Do not count non-responders as attending for the food, but keep a small margin if the supplier allows it (a few extra covers that can be confirmed at the last minute).
2. Silence is not a no either. Before the supplier's deadline, one last personal contact: "Paolo, we're closing numbers tomorrow: shall we count you in or not?".

If the event has limited places, people who do not reply by the date can give up their place to a waiting list: say so in the invitation, so nobody feels left out without warning.

Events with booking: places, waiting list, entry

For an open event, free or with a fee, the logic changes: you are not inviting a closed list, you are taking bookings up to the places available. Three precautions:

• A clear cap, set by the venue's capacity and not by enthusiasm; the room capacity calculator gives an order of magnitude, the authorized capacity comes from the venue.
• A waiting list, with an automatic or manual message to whoever moves up when someone cancels.
• An easy way to cancel: people who can no longer come free up their place only if cancelling takes one step.

Not everyone who books turns up, especially at free events. How many are missing depends on the type of event and the audience: note how many turn up at each edition, so next time you can decide on your own data rather than a generic rule.

Guests' privacy: minimum data

A guest list is a collection of personal data: names, contacts, sometimes addresses, information about who comes with whom and, if you ask about allergies, information about health. In the European Union the General Data Protection Regulation does not apply to data processed by an individual for purely personal or household reasons, with no connection to a professional or commercial activity (European Commission, Data protection explained): for a party among friends, common sense is enough. For an association, a company or a professional organizer there are rules to follow.

• Collect only what you need. In the European Union, the General Data Protection Regulation (EU) 2016/679 requires data to be "adequate, relevant and limited to what is necessary" for the purpose (the data minimisation principle, article 5); the European Commission lists data minimisation among the seven key principles of the GDPR (European Commission, Data protection explained). If you need to know who is coming and what they eat, do not ask for dates of birth.
• Allergies are health data. The same Regulation defines data concerning health as personal data related to a person's physical or mental health that reveal information about their health status (article 4), and places it among the special categories whose processing is prohibited except in specific cases, including explicit consent (article 9) (Regulation (EU) 2016/679, text published by the Italian data protection authority, in Italian). The UK's data protection authority likewise treats any information that reveals something about the state of someone's health as health data (ICO, What is special category data?). In practice: ask about allergies explaining that the answers are only for the menu and, if you organize for an association or a company, collect the explicit consent of those who answer (for example a checkbox next to the question, not pre-ticked); pass them only to the people cooking and delete them after the event.
• Do not share the list. A message to all guests with every address visible shows each of them everyone else's contact details: use blind copy or a system that hides them.
• Keep the data only as long as you need it. Once the event is over and the accounts closed, delete what you no longer need.

Outside the European Union, your own country's data protection law generally applies, and it may differ. For an association or company handling a lot of data, it is worth getting expert advice. The guide on data protection for event organizers goes into more detail.

After the event: thank-yous and closing the list

Invitations have a follow-up. Within a few days, a thank-you to those who came (and those who helped) rounds off the event and, if it will happen again, makes a quick reply more likely next time. Then close the list: compare confirmations with attendance, note how many cancelled at the last minute and how many did not show up without warning, and delete the data you no longer need, in particular allergies and health information.

Common mistakes

1. No reply-by date. Replies arrive after the supplier's deadline.
2. Not saying who is invited. "You are invited" leaves plus-ones and children an open question.
3. Too many ways to reply. Messages, calls, emails, in person: replies get lost.
4. Counting those who have not replied. Silence is not a yes.
5. Allergies passed on verbally. They must reach the cook in writing, with the name.
6. Asking for data you do not need, or keeping it after the event.
7. Messaging everyone with all contacts visible.
8. Ambiguous dates and times without a time zone for guests in different countries.

What this guide does not cover

• It is not legal advice on data protection: it sets out the principles with sources; complex cases need an expert.
• It does not give fixed lead times for invitations: they depend on the type of event, the suppliers and how far guests travel.
• The allergen rules cited apply to those who prepare and serve food; the organizer's main task is to collect the information and pass it on correctly.

Further reading: how to organize an event, wedding invitations and event budget.

Sources

All sources were consulted on 1 October 2026. Sample texts and timelines are invented and labelled as such.

1. Regulation (EU) 2016/679 (General Data Protection Regulation), text with references to the recitals - Garante per la protezione dei dati personali (Italian data protection authority), edition updated with the corrigendum of 23 May 2018. Consulted on 1 October 2026.
2. Data protection explained - European Commission, page consulted in 2026. Consulted on 1 October 2026.
3. What is special category data? - Information Commissioner's Office (United Kingdom), page consulted in 2026. Consulted on 1 October 2026.
4. Food information to consumers - legislation - European Commission, page consulted in 2026. Consulted on 1 October 2026.
5. Food Allergies - U.S. Food and Drug Administration (United States), page consulted in 2026. Consulted on 1 October 2026.