I was there on sunday as well, Nice report I was looking for myself in any pictures. I noticed they took down the divider on waverider. All the times I have riden, two people could ride at one time. Its a fun ride but pretty short, very boring if you dont do any rolls, hops, or knee riding. East coast water works is nice though, its a must if its warm.
PS they also have showers in the back of the changing rooms outside, The best is hitting the water park at night when they have fireworks. No lines and a hot shower while watching fireworks what could be better.