Typhoon Lagoon. This is freakin' Florida, 90 and humid most of the year.
Of the dry parks, EPCOT for the festivals--particularly the concerts--and because there's usually a couple birthdays a year someone just wants to drink around the world.
At Springs, Homecomin' just because it's so much better than the rest, or Splitsville/HoB because friends are playing a gig. Or Dockside if that counts. Used to be Raglan until they started closing at 11.