There is no universal rule about plus-ones, which is exactly why you need your own. The workable convention is that anyone married, engaged, living with a partner, or in a long-term relationship gets one by name, and everyone else is invited alone — applied to every guest without exception.
Draw the line, then hold it
The common lines are: partners of any kind, or partners you have met, or partners in relationships over a year. Any of them is fine. What matters is that you can state it in one sentence and that it applies to everyone at the same tier.
Guests talk. One exception made for a close friend becomes the reason three other people ask, and there is no version of that conversation that goes well. The rule is what protects you, so decide it before the first person asks.
Say it on the envelope, not in the fine print
Address the invitation to exactly who is invited, by name. 'Ms Jane Doe and Mr John Smith' is unambiguous; 'Ms Jane Doe and Guest' explicitly offers a plus-one; 'Ms Jane Doe' invites one person.
Then reinforce it on the RSVP: a card or online form that names the invited guests and does not allow adding names removes the ambiguity entirely. Most awkward plus-one situations are really RSVP design problems.
When someone asks anyway
Answer once, warmly, with your rule: 'We'd have loved to, but we're at capacity and had to keep it to partners people live with.' Do not negotiate and do not explain further. A second sentence invites a second request.
The genuine exceptions worth considering are guests who will know nobody at all, particularly if they are travelling a long way. That is a hospitality judgement rather than a breach of the rule, and it is defensible if you would extend it to anyone in the same position.
What to actually do about it
- Name every guest on the invitation
- The envelope is the mechanism. Ambiguity there is what creates the awkward conversation later.
- Use an RSVP that cannot add names
- Whether paper or online, it should list the invited guests and only allow yes or no. Your wedding website can do this.
- Give your caterer the confirmed number, not the invited one
- Plus-one confusion is a leading cause of headcount drift, and you pay per head.
- Tell whoever is seating people
- An unexpected extra guest is a seating chart problem at the exact moment nobody can fix it.
Common questions
Do you have to give everyone a plus-one?
No. The common convention is that anyone married, engaged, cohabiting or in a long-term relationship gets one, and everyone else is invited alone. What matters is applying whatever line you choose to every guest at the same tier without exception.
How do you say no plus-ones on an invitation?
By addressing the invitation to exactly who is invited, by name, and using an RSVP that lists those names and does not allow adding more. Most plus-one awkwardness is really an RSVP design problem.
What do you say when a guest asks for a plus-one?
Answer once, warmly, with your rule - that you are at capacity and had to limit it to partners people live with - and do not negotiate further. A second sentence of explanation invites a second request.
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