My DH and 3 DS's did this 12/03. They really enjoyed it. My youngest is was probably 9 when he did it. I don't think you need admission to EPCOT, but I'm not sure. When we did it, we did get to the park at opening and enjoyed some attractions, but then had to go to Guest Relations outside the park to join the tour. We asked the guide when they would actually be in the tank, so my DD and I walked around before going back in to the Living Seas. We were able to take video of my guys in the tank. It was pretty cool to be able to say that they were our family members ( not special divers) to others watching. It was something I know they would love to do again. There are discounts offered, so you can check to see if any would apply to you.