Ditto on comments above. I have to ask though about these 'friends'. Surely they wouldn't force alcohol on you? I find that kind of hard to take on board. I remember the High School parties etc we had and although alcohol was consumed if someone didn't want to then there was no pressure.
Do what you want to do. Remember you are moving on with your life so don't buckle when you've got so far!
Enjoy your prom
