what's really cool, if your camera (digital that is) is about the size of 2 fists max, you can stick it inside a ziplock bag, cut a small hole on the side for your strap, and record wet rides like Splash Mountain. I did it and it was great! My camera didnt get wet at all! Thank God for whoever invented Ziplock Bags! But I wouldnt Try it on KaliRiverRapids though... too risky...
Anyway, digital cameras all have the function for nightvision recording now, so when on attrctions that are dark, just switch it on, and everything is really clear. Mind you, it's in black and white, but at least you can see what's going on.