A plus-one is a seat you promised before you knew who would sit in it. That's what makes them awkward on a seating chart. You don't know their name, you don't know who they know, and they tend to be confirmed last. Yet the one rule nobody argues about is simple: a plus-one sits with the person who brought them.

This guide covers who usually gets a plus-one, how to count them before you book tables, where to put a guest who knows only one person in the room, and what to write on an escort card when you still don't have a name.

Who gets a plus-one

There's no single rule, but most couples land on something close to this:

  • Married, engaged or living together: always invited as a couple, both names on the invitation. These aren't really plus-ones; they're two guests.
  • In a long relationship: invite the partner by name if you can find it out. It's warmer than "and guest" and saves you a question later.
  • Single guests who will know almost nobody: a plus-one is a kindness here. A colleague who knows only you will have a better night with a friend beside them. If you don't offer one, the single guests guide covers where to seat them instead.
  • Single guests in a big friend group: often no plus-one. They'll spend the night with people they already know.
  • The wedding party: many couples give every attendant a plus-one, since they're asked to do the most.

Whatever you decide, apply it the same way across both sides. Guests compare invitations, and "why did her cousin get one when I didn't" is a conversation you don't want the week before the wedding.

The table math guide has a short section on the policy itself. The rest of this article is about what happens on the chart once you've decided.

Count them before you rent tables

Plus-ones are where headcounts drift. Suppose you invite 130 adults and offer a plus-one to 24 single guests. If you plan for 130 and all 24 bring someone, you're 24 seats short, which is two or three 72-inch rounds you haven't rented.

A safer way to plan:

  1. Count every offered plus-one as coming when you size the room and ask for a rental quote. Plan for 154 in the example above.
  2. Reduce the count once RSVPs are in. If 17 of the 24 say yes, you're at 147, and you can drop a table or keep it as slack.
  3. Leave the spare seats where plus-ones are likely to turn up late. A friends table with one open chair absorbs a late "actually, I'm bringing someone" without moving anyone else.

Planning high and cutting later is easier than finding 24 chairs two weeks out.

Seat them together. Always.

A plus-one sits at the same table as their partner, and in the chair next to them. Not across a 72-inch round, where the centerpiece is between them and the table is too wide to talk over.

This holds even when the partner has a seat of honour:

  • Head table with the wedding party: the partners of attendants either join the head table or sit at a table right in front of it, where they can see their partner. The head table vs. sweetheart table guide covers the "partners table" option in detail.
  • Family table: if a sibling brings a new partner, that partner sits at the family table. Moving them to a friends table to "save a seat for an aunt" sends a clear message, and it's not a kind one.
  • Working guests: a photographer or officiant who brings a partner is a different case. Agree in advance whether the partner is a guest or just waiting until the work is done.

Where to put a plus-one who knows nobody

The partner knows someone at every table. The plus-one knows only the partner. So the table choice should suit the plus-one, not the partner.

A few things help:

  • Seat them with other plus-ones. Four or five new partners at one table have something in common straight away, and nobody is the only outsider.
  • Pick a table with a talker. One relaxed, sociable friend of the couple at the table does more than any icebreaker.
  • Keep them away from the in-jokes. A table of eight university friends who've known each other for fifteen years is a hard room for a stranger, however friendly it is.
  • Mind the age range. A 25-year-old new boyfriend at a table of your parents' friends will be polite all night and bored most of it.

Don't put a couple who don't know anyone at the back of the room near the kitchen door. It's the seat people notice, and they'll remember where they were put long after they've forgotten the menu.

Unnamed plus-ones and escort cards

You can seat "Guest of Leo" for months, but you can't print it on an escort card without it looking like you didn't ask. Two ways to handle it:

  1. Ask for the name. A short message two to three weeks before the wedding: "We're doing the seating chart, what's your guest's name, and do they have any dietary needs?" Most guests reply the same day. You need the meal choice anyway.
  2. Put both names on one card. If you're using escort cards that point to a table, one card reading "Leo Marchetti and guest, Table 7" works for both. A place card at the seat itself still needs a name, so ask.

If you're choosing between escort cards, place cards and a single display board, the escort cards vs. place cards guide covers the differences. A board listing names alphabetically has the same problem: an unnamed guest simply doesn't appear, so the partner's line has to carry both.

Exes, new partners and other tricky plus-ones

Most plus-ones are easy. A few need a rule:

  • Someone's ex is another guest's plus-one. Put them at different tables, not at neighbouring ones. If the room is small, at least avoid tables that face each other.
  • A plus-one who clashes with a family member. Same rule. You don't need to know the details; you need a table between them.
  • A plus-one you've never met who turns out to be a colleague of your boss. It happens more often than you'd think. Seat them where the partner is, and don't try to solve it with the chart; the coworkers and boss guide covers the rest of the office.
  • Guests who bring an uninvited plus-one. Decide in advance whether you'll find a chair or say no, and tell the venue captain what you decided. The late RSVP changes guide has an order of steps for fitting one more person in without redoing the whole chart.

Doing it in Seatwise

In Seatwise, plus-ones take one line in the guest list:

  • Paste Leo Marchetti + Guest and it becomes two guests, Leo and "Guest of Leo", in one household. Auto-seat keeps a household at the same table, so they can't be split up by accident. Rename the second guest when you learn the name.
  • Couples on one line work too. Jamie and Sofia Lindqvist becomes two guests sharing a household.
  • Leave unconfirmed plus-ones as Pending. Auto-seat only seats RSVP Yes guests, so a plus-one who hasn't answered doesn't take a chair. Switch them to Yes when they reply and run Auto-seat again.
  • Use Keep apart for exes. Open either guest and add the other under Keep apart. If they end up at the same table, the plan shows a warning badge and the Conflicts tab lists the pair.
  • Lock finished tables first. Once the head table and family tables are right, lock them, so a late plus-one only moves guests at unlocked tables.
  • Check the escort-card CSV before you print. It lists one row per seated guest with the table, seat and household, so any leftover "Guest of" names are easy to spot and chase up.

FAQ

Does a plus-one have to sit next to the person they came with? Yes, wherever you can. Same table is the minimum; the chair beside them is the norm.

Can I seat plus-ones at their own table? Only if they're sitting with their partners. A table of plus-ones without their partners is the one arrangement guests do complain about.

Should a plus-one get their own escort card? If you know their name, yes. If not, one card with both names ("Leo Marchetti and guest") is fine.

What if a guest brings a plus-one we didn't invite? Ask the venue captain for a spare chair and add them to their partner's table if there's room. Don't argue about it at the door.