Re: College Band
Hope your audition went well.
I think its safe to say you'll be pleasantly surprised what a college band can do, especially against a 15-piece band. Don't let the size intimidate you either. In fact, they're generally a lot of fun.
One thing I will say: Show up on time for rehearsal, and if you can't make it, get a sub.
As far as jazz bands, I won't spoil the fun... but I'll leave you with this warning... fraternize with the drummer at your own risk!