Hi, I have been lurking for a while and created an account. I have been reading a lot of the ettiquette I haven't posted anything until now but I have a question that I believe is etiquette related. My fiance and I are getting married in April and we are having an open bar. The person who owns the venue does not allow shots whatsoever. He also said that if he saw someone was getting too rowdy that he would cut them off for a while, provide them water or coffee and hopefully nothing would get out of hand. He explained that he has had bad experiences and he felt this was a responsible decision. Makes sense, still an open bar, can't really complain. I was talking to my sister who I have chosen for my maid of honor and I told her what he said. She likes to party and drink, she's in college, no big deal. I was taken aback when she said that his policy was stupid and that if she can't do shots there she was going to bring a flask. She said that she wants to get "absolutely smashed" at my wedding because what else do you do at a wedding?
So my question is, how do I address this? I don't want someone bringing a flask, especially when there is an open bar. It seems really rude to me. Or would it be just as rude of me to say something? My old college friends are huge drinkers but even they aren't going to be doing something like this.