Well, at my prom pretty much everyone who went there and didn't have fun did so because they chose not to have fun. Some people where just deadset to not have a good time and just chose to sit there and be boring. If that is going to be you than don't go, if you decide your going to have fun go there and have fun. I mean unless you truly are someone who just doesn't like going to big events or your friends aren't going I don't see why you couldn't have fun, just let loose and go find something to do afterwards.
Besides, at the end of the day you only get to go to prom once (at least at my school, I don't see why you would even want to go more considering its a way to celebrate the end of highschool) the worst that can happen is your out one night where you could have played Xbox and whatever it costs for a ticket (unless you have to rent a suit, I just wore one of mine). To me, you might as well give it a shot, not much to lose.
Besides, at the end of the day you only get to go to prom once (at least at my school, I don't see why you would even want to go more considering its a way to celebrate the end of highschool) the worst that can happen is your out one night where you could have played Xbox and whatever it costs for a ticket (unless you have to rent a suit, I just wore one of mine). To me, you might as well give it a shot, not much to lose.