I agree with calling, and doing some googling. I think it's definitely getting busier and busier with summer going right along. People are ready to get out and do something. 2nd to last week in June, we were waiting about 45 min- 1 hour for roller coasters and Thunder canyon. Stunt pilot was the fasting moving line we went on and that was not even 10 min. Hard to say how busy it will be, just due to everyone not having a summer last year. Definitely make reservations in advance for staying. Hotels are spendy in the area and I imagine all book fast. All in all it's fun! Good luck, have fun!
I would suggest calling them. We were just there and it wasn't too bad. The RV spots mostly sell out months in advance. Lines were 15-20 minutes at worst. The lazy pool was bumper to bumper.
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