right now the website states for late july (27-30th) 9-10pm for both parks? Does this sound about right......or is there a chance they may be open til 11 or midnight?
The web site is correct.
Sometimes, the park will open a little early at 08:30 or 08:45am depending on crowds.
But during July, the fireworks happen at 09:55pm, and that's it.
Oh, and it's very hot during the day. Plan to arrive early, go back to your hotel room in the afternoon to rest/swim, then come back at night to go on a few rides and end with the fireworks show.