I just joined so this might be late but I feel it’s well worth it at least once. It’s kind of pricey for a return trip. I have done it twice cause I got to lead the trip last time for my shop. I think you’ll have the most fun if you just sit. It’s a 45 minute dive. Both times I just say at "shark alley" and watched as the sharks came up and visited. It’s worth swimming around in the beginning just to see the whole thing. Kids that are on the dry side of the exhibit have such big smiles when you swim up to the window. I have the number for the place but you can sign up I think on disneys site or just google naui dive Epcot.