For me water Parks are a waste of time, effort and money. You pay a high gate price to queue for ages to slide down a slide that lasts no time at all with hardly any thrill involved. Other than that you can lounge round a pool, go in a pool or eat, all things I can do at resort for no extra cost. These are the reasons I won't go to water parks. Now if uni were to enhance the water park experience, with the best theming, additional water rides, amazing shows, then that would give me a reason to want to go. Water parks as they are offer little bang for your buck, it's time to change the way we water park.
This are my thoughts and feelings, I appreciate that others will enjoy water parks but for me, in their current guise, they are an expensive waste of time and i would rather spend that time the resort pool.