My younger brother is getting married in October and I was asked by his fiance to be a bridesmaid. I was excited because my brother and I are really good friends and have done so much together and I thought that it would be a great way to get to know his fiance better.
As time has passed it has come to light that I do not see things the same way as the bride-to-be does when it comes to the style of partying, and in the last few months I have witnessed a handful of times where she has gone from quiet/shy to a full obnoxious drunk. My brother said that her friends are pretty similar and I have been around her sister, aunt, and mother who all love to party, drink, and be obscene in public.
For her party they are going to rent a party bus and bar hop all night and she has informed me that everyone will be having a good time and will get very drunk. I do not drink much since I get sick easily from the slightest wrong mix of alcohol and I also do not like how the bride-to-be acts when she has been drinking(picture the girl at the party that is falling on the floor, jumping on other guys, dumping drinks on people intentionally, yelling inappropriate words, fighting when told to leave, etc) . I feel that by going to the party I will end up not having fun and will be the "mother" to the other girls at the party to ensure that they are being safe. Her mother will be there but is bad with the booze too.
I'm not against her doing this for her party since it is her wedding but I do not want to put myself in that position. What is the right thing to do since I am a bridesmaid? Would it be appropriate to join them at the bars for the early part of the evening and then leave?