Okay, so we've pretty much settled the guest list at just under 140 people. Among our guests are a number of co-workers from the camp we met at and worked at over the past several summers. A number of the guys (boy scout camp so mostly college age men) have had girlfriends/SOs/etc over the years but none are married and since they would all know each other, we plan to keep it at single invites for all of them.
Here's where it gets a little tricky- one of our camp friend's broke his neck two years ago and is in a wheelchair. He is usually accompanied by family when he travels. One of our other guests (also a camp guy) is dating this guy's twin sister. We had planned to invite his parents since I know he would be travelling with someone because of his situation (and we know his parents so it's not as if we aren't familiar with them too.) We are thinking of inviting his sister because it's adding up to inviting everyone in the family except her. One of the guys in the bridal party is from the same group of friends and I'm not sure if it would be rude to not allow him to bring his gf (my thinking is that being part of the bridal party is a litte more work than just being a guest.)
If we invite them does that open the door to other people in the group thinking they can bring their significant other? I don't think giving everyone a blank "+1" will work because that'd open up the possibility for 20 more guests which our budget can't handle. I'd appreciate any suggestions on the right way to handle this!