You should probably post on the theme parks board. I've been there during Grad Nights, it wasn't a big deal except MK closes at 7:00, no fireworks or spectromagic (on those nights).
The only complaints I have heard about is from people staying at the Gand or Poly. They said it can be very loud, when you're trying to sleep.
You will get more ops from the Resorts board.
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