Plus-One Etiquette for Couples and Guests

The plus-one question causes more quiet stress than almost anything else on the guest list. Couples worry about looking mean. Guests worry about asking. And the maths gets expensive fast, because every "and guest" you add is another head at roughly £80 to £120 for catering alone. So let's be honest about who gets one, how to word it, and what to do when someone asks for a plus-one you hadn't planned to give.

What a plus-one actually is

A plus-one is an open invitation: your guest brings whoever they like, and you may never have met that person. That's different from inviting a named partner. If your friend has been with their boyfriend for three years and you know him well, he isn't a "plus-one", he's a guest in his own right. Put his name on the invitation.

The distinction matters because it changes the expectation. Naming both people says "we want you both here". A blank "plus-one" says "bring someone so you're not on your own". They feel quite different to receive.

So the first thing to do is split your list into people you're inviting with a named partner, and people you might offer an open plus-one to. That second group is where all the deliberating lives.

A simple framework for couples

You don't need a rigid rule, but you do need to be consistent, because guests talk and unfairness is the thing that actually causes upset. Here's a workable starting point.

The cohabiting line is the one most couples land on, and it holds up well because it's clear and you can explain it. "We invited partners who live together" is a sentence nobody can really argue with.

The exception worth making is the lone guest. If your cousin is coming and genuinely won't know a soul beyond you, an open plus-one is a kindness. Standing alone at a wedding where everyone else arrived in a pair is nobody's idea of fun.

Budget changes the answer

If you're 80 guests and comfortable, generous plus-ones are easy. If you're squeezing 50 people into a space that holds 50, every open invitation is a real trade-off, possibly an aunt you'd rather have there than a stranger. There's no shame in deciding that named partners are in and open plus-ones are out. It's your day and your budget.

How to word it so nobody's confused

Vagueness is what causes the awkward follow-up texts. Be specific on the invitation and the RSVP.

• Inviting a couple: write both names. "Priya and Tom" leaves no doubt.
• Offering an open plus-one: "Sarah Jones and guest".
• No plus-one: address it to the single name only, and make the RSVP reflect that.

The RSVP form is where this gets enforced in practice. If you only want named guests, your reply page should only let people confirm the seats you've allocated, not add extras. With Build The Day, each guest's RSVP shows exactly the seats they've been given, so a single guest sees one place and a couple sees two. No mystery extra names appear on the night, and you're not left chasing to find out who "+1" turned out to be.

A quick word on children, because it's the same problem wearing a different hat. If it's an adults-only do, say so plainly on your website ("we've decided to keep our day child-free") rather than hoping people read between the lines. Naming the specific children you are inviting works too.

If you're the guest

Wondering whether you can bring someone is a normal thing to wonder. Here's the steer.

Read the invitation first. If it says your name and only your name, that's your answer, and it isn't a snub. Couples make these calls based on numbers and budget, almost never as a comment on you. Tight venues and rising costs mean smaller, more deliberate guest lists are increasingly common, and a named-only invite is part of that.

If there's genuine ambiguity, it's fine to ask once, gently and early: "Just checking before I reply, am I able to bring my partner, or is it just me? Either is completely fine." That last clause does a lot of work. It gives the couple an easy out.

And if the answer is no, take it gracefully. Don't bring an uninvited guest on the day, ever. A catering count is a fixed thing booked weeks ahead, and an unexpected person means someone scrambling to lay a place that doesn't exist. Turning up solo to a wedding is genuinely lovely once you're there, because weddings are full of people delighted to chat.

Handling the awkward ask

Sometimes a guest will push: "Can I bring someone?" when you'd decided not to offer it. Hold your line kindly and consistently. Something like: "We've had to keep numbers tight, so we're only able to invite partners who live together, hope that makes sense." It's warm, it's a reason, and crucially it's the same reason you'd give anyone else.

The trap is making a quiet exception for one person, because the moment another guest finds out, you've created the exact unfairness you were trying to avoid. Pick your rule, write it down, and apply it to everyone. That consistency, more than any clever wording, is what keeps the plus-one question from turning into hurt feelings.

Decide early, be specific on paper, and let your RSVP do the enforcing so you're not chasing names in the final fortnight.