College age kids need a separate invite?

We only have one college age guest, so we're sending her her own invite addressed to her parents' house. I kinda suspect her mom will be the one sending the reply cards back though.

We sent all separate invites for the adults that still lived at home

Could you send 1 invite with 3 rsvp cards each separately labeled?

First of all, not every person over 18 needs a +guest. No matter what! It's a nice gesture but most 18 year olds can handle going to a wedding without a date.

The rule about inviting adults who live at home is that each adult gets their own invitation.

Crap - I didn't even think of this one. I come from a big family (oldest of 21 grandkids on my dad's side). He has one sister with 5 kids - youngest is in HS and the other 4 are college/post-college but live at home. I thought I will just do 1 invite to them instead of 6 being sent to the house but now thinking....

Thanks for all the wonderful ideas ladies!

@Ash that's a great idea, but I was thinking of doing online RSVPs.

Wait, I thought etiquette stated everyone who was 18+ should get a plus one. Is that not the case? When is it necessary to give a plus one? I have a bunch of single cousins (in their 20's) who I know are single but I was going to give them a plus one just because I thought that was the norm.

If they with there parents they get one invite. For me it would have added at least 15 invites and none of them got plus ones (they are 18-19).

I only have this issue with one family, and I already just told her over Facebook "Just so you know, only yours and Husband's name are on the envelope, but of course children A, B, C, and D are invited."

Like heck I'm sending 5 invites to one house.

I'm sending one to the parents and the one to all the kids so instead of sending 4 invites to my aunts house who has 3 kids I have the parents with 2 seats and the one addressed to all 3 kids with 6 seats.

Plus ones are not required. You invite couples (dating, engaged, married) as a unit, but you're not required to give singletons a guest. Bridal party should always be given a plus one.

I just checked my etiquette book and they say everyone over the age of 13 should receive a separate invitation, but it's more common to do it for those 18 and over. They also say that you don't have to offer a plus one to every unattached guest, but you do have to make it uniform. For example, you can offer a plus one to all single members of your wedding party, you don't have to offer one to other unattached guests, but you can't pick and choose who gets one among the unattached guests. You do, however, have to invite SOs of your guests if it's a long term relationship.

Please don't take this as me trying to tell anyone what to do--I'm just quoting Anna & Lizzie Post.

I plan to address it to the Family. I am not giving plus 1 to my college age cousins. I have way too many cousins to add +1. So I don't think you have to give anyone over 18 a +1. I give +1 to people who don't know many people at the wedding, and people who have been dating them a while, or if the cousin is older than me thats how I'm handling it. Good Luck!