For those who haven't been, I wanted to update with details of our trip:
First, you don't need a park ticket, as you meet just outside the park gates. Facing the gates, it's the building to the right which used to be an old camera/film store.
Once everyone is there, you are taken in, gear is put away, you are given a locker, and you get a general backstage tour. It's not very in depth as the main focus is of course diving, but it was cool. They give you an estimated time for your family and friends to meet inside the Seas to watch you from the main viewing platform. Once you text your family, phones need to be put away.
We had a chance to see backstage where the manatees are fed, and also had a chance to see where the dolphins come in for feeding/health checks. They talked in general about facts for the Seas, as well as talked about conservation and protection of the oceans and wildlife. We had a chance to wander the various back hallways to get into the various places and classroom, so you get a small sense of what is going on behind the scenes.
They are very specific about the fact that you will be part of the show, so of course they expect good behavior. It's Disney after all. Not only will your family and friends be watching, but the entire Coral Reef restaurant has large windows where they can see you. You also have a chance to walk from behind the scenes onto the main aquarium floor, and then back as you cross through to various areas. It's an interesting way to get a better sense of what/where the various areas are.
As part of that, one you are done with the main tour, you get changed, meet up, and they bring you back up into the main aquarium area, and you walk down through the central hallway of the viewing area. (They know how to get visitors interested in what is going to happen.) You'll have a quick chance to say hi to family, then you go up the central pillar which hides a spiral staircase that takes you on top of the viewing area. Up there is a large circular room which you are in the middle of, and in each direction is a quadrant of the aquarium itself.
Once there, you get to wade down into the knee deep water of the loading/unloading area, get into gear, and when ready you can hit the water. You get a short tour of the aquarium once everyone is down, and then have 30 to 40 minutes of time to just wander and play. You are not allowed to touch the fish of course, but they have no problem coming up very close so you don't need to worry. There is finally a point where the divemaster will signal everyone over to the glass of the viewing area, and the videographer will make several passes to get you and your friends/peeps on camera together. You can also go over to the glass anytime you want.
For us, having the sharks and some of the huge rays come by was amazing. Things I haven't had a chance to see in the wild (I'm still new). Getting to see family while underwater, and for them to really get a chance to see what we do was really cool. Instead of being bored, they loved seeing us, the fish, and our reactions.
Once done you had time to go shower, get dressed, and then meet back in the classroom to watch the video they put together. It was available for everyone to purchase, and you had a choice of a hat or shirt as part of the visit.
I had two friends who were both sort of 'eh, let's do it' and ended up loving it. We had a great time overall, so would definitely suggest it to anyone who is thinking about it or on the fence.