I didn't think it would be super difficult deciding who gets a plus one, but dangit, it is!
Also annoyed at people who assume they get one. My fiance called his aunt to get his cousin's addresses from her, and he asked "what's Taylor's girlfriend's name?" Well apparently Taylor and his girlfriend are no more, so his aunt replied "no, it'll be Taylor and Guest".
What?! um...no, if he isn't in a relationship anymore, then he don't get no plus one! He's going to be sitting with all of his family, and cousins, he'll be fine on his own.
But now I feel weirdly obligated to put "and guest" for him....eugh.