Adult only. Private by design.
Couples only vs an open room
Couples only means the room is pairs. An open room means the host also invited singles, on purpose. Say which one it is before the link goes out.
The short answer
Couples only vs an open room is about who is allowed in the door, not what they do after. Couples only: every guest is half of a pair the host invited. An open room: the host also invited singles, and those singles are on the list because the host chose them.
Straight, bi-friendly, soft, full, same room, and separate room are different lines. A couples-only night can be straight or bi-friendly. An open room can be soft. Do not let one phrase smuggle the rest. Bi-friendly does not include singles. An open room is the shape that can.
Adult only. Private by design. There is no public guest pool. A single does not get a seat because they live nearby. The host still picked them. A maybe does not inherit a link. A name appears only when both people said yes.
What couples only protects
Couples only is a promise that the person across from you came with someone who also said yes to the night. That matters if you do not want to negotiate with a single who has no partner in the room, or if one of you freezes when the math stops being even.
It is not a promise that both partners want the same things. You still set a ceiling at home. You still say yes or no to one person. A couple can be two yeses, two nos, or a night where one of you sits out. Sitting out is allowed. Pretending the pair is one brain is how people get hurt. Your own partner is never someone you answer about.
A straight room and a bi-friendly room are both couples. Neither includes singles. On a couples speed date you see both names and one couple photo, and a match needs both couples to say yes. You stay dressed. On a key party you answer about one person. If the host set that night so couples answer together, the invite has to say that. The usual night is one person at a time.
What an open room is actually offering
An open room means singles are welcome because the host invited those singles. Not a person who found the link. Not a friend of a maybe. A person with their own link, a name, and the same house rules. If you are the single, you are a guest. If you are the couple, you do not get to treat them like a prize.
A play party can be that shape. An open room can include singles. The host still looks at the door. You confirm you are 18 or older, and only the host checks people in. An open room is not a public night. A private no stays private. A one-sided yes stays hidden.
Say who was invited. A couple that wants one kind of guest and will sulk at another should not use the word open and stop there. Vague open is how a guest gets stared at. On an open speed date, a single answers for themselves. Say that in the invite so nobody learns it at the table.
Decide it before the invite
Talk at home about singles. One of you may want the option. The other may want every guest to have a partner in the house. The night you host is the stricter one, unless you are ready to explain a split rule. Most rooms should pick one.
The invite says couples only, or singles welcome, and who those singles are in plain language. A couple who will not play near a single declines an open room early. A single who will not be the extra person for a couple that will not say so declines too. Tuesday is kinder than the doorway.
Seeing each other's answers does not add a person. If the host left partner comparison on, you can see each other's yes or no while answers are still open. Nobody else sees them. The host can turn that off for the whole party. A plus-one does not get a link because the pair was charming.
Write the room into the rules
House rules are one line, one rule. Couples only. No singles. Or: singles the host invited are full guests, and anything that happens needs a yes from everyone in it, including the partner who would only watch. We will see who shows up is not a rule. If the host edits the rule, guests agree again.
A single's no is a no. A couple's no is a no. Nobody owes a reason. A private no stays private. Do not reconstruct it in the kitchen. Do not treat a guest as a prize. If you want a specific person there, invite that person. A yes still has to come from them. A name appears only when both people said yes.
If this is the list you want to run, start hosting. Keep it to people you would actually let in. Hold the street until you release it. The hosting help walks through the guest list, check-in, and the moment you open matches on a play party.
FAQ
What is the difference between couples only and an open room?
Couples only means every guest is part of a pair the host invited. An open room means the host also invited singles. Both are still private lists.
Can a single join a couples only party?
Not unless the host changes the room and everyone agrees again. Straight and bi-friendly rooms do not include singles. A plus-one does not inherit a link. A maybe does not get one.
Does open mean anyone nearby?
No. Open means singles the host chose. There is no public guest pool. Distance is not an invite.
Can a key party or a speed date include singles?
An open room can include singles the host invited, including on a play party or a speed date. On a couples speed date a match needs both couples to say yes. On an open speed date a single answers for themselves. The invite has to say which night it is.
Should the invite say couples only?
Yes, if that is the rule. Say singles welcome if that is the rule. A guest who wanted the other room should be able to decline before they answer. A name appears only when both people said yes.
When the list is ready, you can host a play party.