What things do people do at weddings that drive you bonkers, make your stomach turn, offend you, etc?
For me, I can't stand when people make jokes about the groom not wanting to be there. Things like "Help Me" being written on the bottom of his shoes; the cake toppers with the bride dragging the groom; or even just little jokes made by guests. I just think it's tacky and offensive. A marriage in which both people aren't coming freely on their own will isn't valid, so it's not a funny thing to joke about.
Another thing I don't like is when people ring bells/clink glasses/whatever to make the B&G kiss. I realize that a lot of people like that, but I just don't. I will kiss my husband when I want, thank you very much. That's more of a personal preference, though, so it's not like I judge people who do that or anything. Just not my taste.