You will have to be prepared:
Regular water breaks
Favorite indoor attractions to visit during the hottest - you have the hotel option too, but sometimes you aren’t ready to leave the park yet.
Must bring ponchos - pro tip bring one for your stroller too - if you have one.
After the storm moves out, good news is that it always drops degrees. You will need to ignore the humidity and how bad your hair looks.

so does everyone’s
My suggestion is to do the attractions by priority, not by geography. Within reason. Do the must-dos first when you have energy. Obviously don’t be crazy about it and walk all over the place, but the kids will be happier they got their favorite things in.