I was talking to a friend of FI the other night and he told me he's really excited about the wedding and he's already spoken to his friend Ian and that he's going to bring him as a "bro date" to have a wing man to hit on the single ladies and so he can drink up and party too. Granted he had been drinking, but I really didn't know what to say to this. I just kind of smiled and then we got interrupted. Tell me, am I wrong for thinking this is not okay? I don't want to tell my guests who they can and can't bring for their +1 but we're not offering guests a +1 so they can bring a frat buddy to drink our alcohol and eat our food. It is as a gesture so they'll have a date to dance with or to have someone to talk to if they don't know anyone. Oh, and this guy knows like 15 other people that are invited and who will most likely be coming. Am I being unreasonable?