Water park for a 5 yo boy

[fdiniz]

Which of the water parks would you suggest for a 5 year old boy? He won't beat the height requirement for Crush'n Gusher, for example, so that may affect the answer a bit....

We are going in september... Hoping to catch a sunny day for it...

 

[Gumbo4x4]

The height was going to be my first question. And with your answer, I'd say Blizzard Beach