Is there a water park or a place to get wet?

yes, and it's called volcano, it's one of the 3 parks

In universal studios its self there is only a kiddie area for wet fun! In Islands of adventure there is 2 rides you are guaranteed to get completley soaked on. A 3rd ride where it could go either way(jp) And then if you want to go to a water park only...they have volcano bay! I stay in the fast river for about 5 hours when I'm there! I could probably live in that river...

Yes its called volcano bay tickets are $90 before tax

YES