What did you prohbit at your wedding?

The main things I would prohibit are party poopers in their many varieties. This includes people who are too drunk, people attempting to start arguments or bring people down and that sort of thing. I would enlist the help of a couple close friends and family to kind of be the party patrol. If anyone starts to cause trouble, their job would be to discretely escort party poopers away from the reception, and if necessary, driven back home or back to their hotel.