How to plan an event guest list and seating

Events go wrong in the last week because the guest list, the numbers and the seating were all decided at once. Doing them in order makes the last week almost dull.

The short answer

One list with one row per guest, not one per household, and a column saying who invited them.
Decide the seating rules before the room, and the room before the table shapes.
RSVP date at least ten days before the caterer's final number is due.
Keep a single file for dietary needs and accessibility, with a note of who confirmed what.
Print the plan twice: once for you, once for the venue. Screens fail on the day.

A working order

Build the list: name, contact, party, invited by, RSVP, meal choice, notes.
Send invitations with the RSVP date written plainly, and one way to reply.
As replies arrive, mark them the same day. An evening of catching up on a week of RSVPs is where mistakes start.
When replies close, count three numbers: confirmed adults, confirmed children, and any dietary needs.
Only then draw the room: number of tables first, then who sits with whom, then place cards.
Walk the plan once as a guest: arrival, where they put a coat, where they sit, how they find their name.

The rules that prevent the awkward table

Seat by who already knows someone, not by who you hope will become friends. Two groups at one table beats eight strangers at two.

Keep one short list of people who must not sit together, written down privately. Everybody knows it exists; almost nobody writes it down until the day.

Children at their own table if there are enough of them, with one adult who volunteered.
Put anyone with mobility needs nearest the door before anything else.
Leave one spare seat, two if the venue allows.

Where this goes wrong

Chasing RSVPs one by one in the last week. Ask once, at the date, in one message to everyone who has not replied.
Drawing the room before the numbers are in, then redrawing it twice.
Keeping allergies in a chat thread instead of the guest file.
Forgetting the second copy of the plan for the day.

The free tool for this

There is no calculator that answers this one honestly, so here is the free set: eight calculators for rates, quotes, invoices, splits, prices and fees. They run in the page and send nothing anywhere.

If you would rather not build it yourself

Event Plan holds the guest list, RSVP tracking, the dietary and accessibility notes and a printable seating sheet that all read the same numbers. Event Plan is $14. See it on the shop, and there is a plain page about it here: what it holds.

Questions people actually ask

When should invitations go out?

Six to eight weeks before for most events, longer if people travel. The RSVP date matters more than the send date.

How do I handle a late yes after the numbers closed?

Say yes if the venue allows it, and add them to the file and the table note the moment you do. The failure case is remembering in your head on the day.

How to plan an event guest list and seating without chaos