I've eaten at Coral Reef maybe a dozen times in the last 5 years. I think the opinions on this place depend on what you are looking for. If this is an adult only dinner, absolutely not, I would not recommend it. The place is very noisy. If you are in a hurry, nope, can't recommend it either as they are always behind on their adr's and the service is slow to non-existent. If you are looking for really good fish or seafood, well, there are much better places at the World.
If you are looking for a great unique undersea decor with a huge aquarium that will entertain your children, this is a good selection. I especially like it on hot bright days because the place is dark and cool. The food is okay, not great. I think I've tried everything on the menu and overall, I think they oversauce and overflavor most dishes. My favorite is the mahi mahi, the sauce is milder and can be scraped off to enjoy the taste of the fish. The appetizers are very ordinary but the desserts here are pretty good.