RSVP deadlines: how early to close, and how to chase replies

How far ahead to close it

• A wedding at home with most guests in the same city: close two weeks before the day.
• Many guests travelling domestically or flying: four weeks, so they can book tickets and request leave.
• Guests coming from abroad: six to eight weeks. Visas and international fares do not wait.
• A resort wedding or an all-inclusive package outside the city: follow the venue’s own deadline, usually three to four weeks.

A rhythm of three messages

Chase too often and you become a nuisance; chase too little and nobody answers. Three touches is the right number:

1. The invitation itself, six weeks out, sent as a personal message. Most people reply within the first 72 hours or never.
2. First reminder, 7–10 days later, to non-repliers only. One short sentence, no reproach.
3. Second reminder, three days before the deadline, with the reason spelled out: “the venue needs our table count on the 20th, so I wanted to check with you.” People cooperate far more readily when they know why a date exists.

Then stop. For the handful of people who genuinely matter and are still silent, make a phone call. A third message brings in no additional replies, only additional irritation.

How to write the reminder

Three rules: send it privately rather than in a group, ask exactly one question, and phrase it so a one-word answer is enough.

For a friend: “Hi chị — we are confirming table numbers with the venue this weekend. You and anh are both coming, is that right? A yes or a no is all I need.” The words chị and anh are the ordinary Vietnamese terms for an older woman and an older man, and using them instead of a name is what makes the message feel warm rather than administrative.

For someone senior to you: “Dear bác, this is Long. My wedding is on 12 December and the venue needs our numbers by the 5th, so may I ask how many of your family will be able to come, so I can seat you properly?” Vietnamese politeness here comes from naming yourself, giving the reason, and asking for a favour rather than issuing a request.

Lines to avoid: “Why haven’t you replied yet?”, “Last reminder”, or a group message saying “everyone who hasn’t confirmed, please confirm.” Each one turns an invitation into paperwork.

Older guests need a different approach

Do not expect grandparents, aunts and uncles over sixty to tap a link and fill in a form. Many will not, and some do not own a smartphone. For this group, call them, or ask your parents to work through the names over one evening and report back. You enter the answers yourself. It costs ten phone calls, it is perfectly accurate, and in Vietnamese families the call itself is part of the courtesy.

What to do about silence

A simple rule: count non-repliers as not attending when you give the venue a number, but keep 5% of seats spare anyway. On 30 tables that is about 15 seats, a table and a half. Venues will almost always open another table during the event if you warn them at the start of the evening. What they cannot do is unmake a table they have already laid.

The reverse problem is a group that accepts and then does not appear, which is usually old schoolmates or former colleagues. For that group, plan on 50% attendance even when they say they are definitely coming.

Four things to do the moment the deadline passes

1. Export the confirmed list to a spreadsheet and recount heads, including children.
2. Pull out vegetarians, allergies and anyone needing a high chair, and send that to the venue at the same time as the table count.
3. Build the seating plan by relationship group, never alphabetically.
4. Send one schedule reminder one or two days before: reception time, when the banquet starts, the address and where to park. This single message visibly reduces how many guests arrive late.

With an online invitation all four of those become reading numbers you already have. The real value of an RSVP button is not that it is convenient for guests. It is that you always know exactly how many people you have, at any hour, without counting messages.