I've never been to a frag swap before - how does this work? I assume items are for sale, and not just trade? Are there fish & inverts (I know there are retail vendors there too), or mostly just coral? Do we bring our own water/bags/containers, or can we just buy bags of stuff from most of the exhibitors? Sorry about all the newbie questions, I set up a new tank a few months ago, & am looking some good beginner-friendly stuff to stock it with, & this sounds like a great event!