I was just there. We packed really light and staked out a place. My wife carried the keys to the world in a waterproof carrier. Crushngusher is really fun, not that scary, that and shark reef should be your first two events. Shark reef is great, especially if you have never snorkelled.
Family raft is fun... storm slides...and the lazy rivier is great too.
Get there early and tay until it gets crazy...but it is a lot of fun.