So here's the deal... my fiance and I are getting married in 34 days.
We've been gently prodding our guests who have been given +1s for names of their people so we can make the appropriate arrangements. Amongst those people is one of the bridesmaids.
It was always understood that for the rehearsal brunch, said bridesmaid would be bringing her mother as her +1 (and mom has her own invite to the wedding/reception itself), but would be bringing someone else as her date for the reception -- all cool by us.
We just found out that the bridesmaid's +1 for the ceremony/reception would be someone that my fiance really does not like, and specifically told the bridesmaid that he was not being invited to the wedding. I've never met the guy, but this person has been thrown out of house parties that my fiance has hosted for being abusive/disrespectful to other guests, and basically getting wasted and insisting on being the center of attention.
We've reached out to the maid of honor (fiance's younger sister, friends with said bridesmaid, and also knows and dislikes this potential +1) to try to find out what's going on, and why this person was invited (i.e. was this a way of getting back at my fiance for not calling/hanging out as much since we got together?)
On the plus side of things, if this guy does come to the wedding, we've got a number of friends who are experts at running interference, and we can always tell the bartenders to short pour the guy.
Ideally, I'd prefer not to have any drama on the wedding day itself: we've already paid for the programs to be printed, and I don't want any friendships ruined.