they're a good, fun crew, from what i've seen of them. if you're in your 1st through 4th/5th year, you'll probably fit in/have lots of fun with them.
my first piece of advice to you is to NOT wear cotton. especially if you're going to be practicing wearing a PFD. if you've never had raw/chaffed nipples, you will after your first ever practice wearing cotton. ouch! dri-fit type sports shirts all the way.
2nd piece of advice would be to only wear clothes/shoes you're not
too fond of. they're going to get wet, and they're going to get wet with false creek water. they're going to stink. rinse, wash, and rinse again. i'm pretty sure the dragon hearts practice out of fcrcc, so rinse your stuff in the shower with you afterwards. do NOT wear your brand new, fancy-ass shoes. i wear crocs, and they seem to hold off the smell of FC water pretty well.
that all said, have fun! lots of great people involved in dragonboat at all levels, and don't be intimidated by anyone or any team. everyone starts from scratch at one point in time. the
good paddlers won't have any problems helping out/giving tips and pointers if you ask, whether or not they're on your team.