Pets Ahoy, Wild Arctic, and Alure are indoor shows/rides/exhibit.
Also inside under air are the Manta aquarium, Shark Encounters, Penguin Encounters, the dolphin underwater viewing, the aquarium in the gift shop by Atlantis, the manatee rescue area, and all the gift shops. Several of the restaurants have indoor seating...Voyagers,Sharks Underwater
grill, Antarctic Market, Spice Mill has a few indoor as well as some inside Sea Fire Inn .
The stadiums have seating under roofs so you can get out of the sun, too.