One of my favourite restaurants at Epcot is Coral Reef. I love the theming, the colouring, the aquarium viewing and have never had a bad meal there.
It also has one of my all time favourite desserts, Bailey's & Jack Daniel's Mousse. Each layer has quite a distinctive flavour and when you get a taste of both of them together, seriously good! It comes with a caramel crisp as well, only I have allergies so mine comes with a little stick that says allergy and no crisp for me.