So epic has 6 attractions (4 rides, 2 shows) open in the rain. Those attractions are Monsters Unchained, Constellation Carousel, Ministry, Mario Kart, Untrainable, and Cirque. This isn't too far off from the number of indoor attractions at some other orlando parks. Islands only has 6 open during weather delays (FJ, Kong, Cat, Storm Force, Carosuessel, Spiderman) and DAK also has 6 (Nemo, Lion King, FOP, Navi River Journey, Dinosaur, and Safari (depending on how bad the weather is)). Epic isn't too bad, especially for a brand new park.