Invitation Etiquette and Plus Ones

1. All couples should be invited, but you don’t need to give plus ones to single people. I would give them to those traveling a far distance or for any guests who don’t know anyone else.
2 and 3. We sent each person/couple over 18 a separate invite so “Tom” on one invite, “Jerry” on another and then “Aunt and Uncle” on a third. The plus ones for the cousins should, IMO, work the same way as the rest of your guests.
4. If she lives with her parents, yes send hers (with her FH’s name on it) to where she lives.

Anyone in a relationship at the time invites go out (6-8 weeks before the wedding) need to both be invited by name. Anyone over 18 gets a separate invitation even if they are in the same household.

I got flack for this from those in a relationship aha but I didn't have room or the budget to accommodate every persons plus one so I didn't. I only allowed married people their plus ones and people travelling to come and people who didn't know anyone else or who would be super uncomfortable alone. I had friends who had other friends at the wedding so I didn't. I really didn't have the room for all plus ones. So this largely depends on how much space and budget is in yours.

Personally if it's the whole family were doing The Jones Family as an invite for the kids over 18, there is literally no reason for me to purchase 10+ more invites for our cousins who all live with their parents when we can do a family invite and only buy 3. People will say all adult kids get invitations but I can't justify the cost or roundabout method of such.
You're "supposed to" invite adults that are in relationships and their significant other. If I did that I'd have to expand my guest list by more people than I can afford to invite, our cousins are not getting +1 for their significant others because it'd mean I can no longer have any friends, my fiance and I aren't close with our cousins so we don't really care if their feelings get hurt. If you're close with yours it might cause a problem.
For the engaged one I would send them their own invite as a couple like Jill Smith & Jack Doe to reduce confusion.
There's people who will harp on ettiquite but frankly you don't have to invite people you're not comfortable with at your wedding. You're footing the bill so you get to pick the guests.

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I like this answer haha.

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Thank you!

1. Our bridal party are the only ones granted a plus one if they are single.

2. Address one to Aunt & Uncle and another to Cousin.

3. This is entirely up to you. We opted for no plus ones for our single cousins because they'll know other family members. We're implementing a "no ring, no bring rule" for our cousins because I've never met some of their significant others before.

4. I would say yes to this one based on my last comment. I would address a separate invite as Cousin and Guest.

1. Yes, you can pick and choose, it's your wedding. However, you're talking about giving "plus ones" to people in a relationship. That's not a plus one. Plus ones are for truly single people. Maybe they won't know anyone at the wedding, or are travelling from out of town, and you would like to give them the option of bringing a date. That's a plus one. Any friends that have a girlfriend/boyfriend/significant other should be invited as a couple. If you don't know Cousin Joe's girlfriend's name, ask him before invitations go out.

2. You'll probably get conflicting answers on this one. Proper etiquette states that anyone over 18 should get their own separate invitation. But, hello! Weddings are expensive, and in reality, why send multiple invitations to the same house. If aunt, uncle and 3 cousins all over 18 still live under the same roof, I would send one invitation, and address it: Mr. and Mrs. Uncle's Name and Family.

3. Only give your 18+ cousins a plus one if you want them to be able to bring a date, and only if you can afford that many guests. Plus ones can really add a hefty chunk to your costs, so not everyone can afford to do that. Also, if you're trying to limit the number of guests you don't know, I would skip this. It's not like random friends or coworkers, who aren't likely to know many people, if anyone, at the wedding. Cousins will have other family there to mingle and visit with.

4. In this situation, I would address the invitation to the engaged daughter and her fiance, but send it to her address (I'm assuming is her parents' address). This is one of the exceptions to my no sending multiple invitations to the same house rule.

You ABSOLUTELY choose who gets a +1 and who doesn't (along with your future spouse of course). It's your day.

I sent to Mr & Mrs Guys first name, Last name. If they had kids under 18, I added & Family. If the kid was over 18, they got their own invite. If it was a single person, I wrote & Guest. Anyone over 18 (not married) I addressed as Ms. under 18 was Miss. Anyone who I knew for sure was in a relationship (my cousin was engaged) I addressed to Mr & Future Mrs Guy's first name, Last name.