Are you stupid of dedicated?
Such a silly question to ask!
I would attend your prom if it is your senior prom. That happens to be a single special night that you may remember for the rest of your life.
As for missing work, school classes, doctor appointments, or things of that nature to go hunting...
That is dedication without a doubt! When I was attending college to get my Associates degree I can not count the number of classes that I missed due to hunting season. The best part was that a number of my professors were also hunters and would not count my absences against me as long as I gave them advance notice.
I guess the best way to think about this is that any event where you only get a limited amount of chances to attend should be given special consideration due to the limited chance you have at participating in that event.
I wish you luck in your decisions of the future.