My companion would have given this 5 stars, but he doesn't get a vote, and he's a total shark/water geek (we also had to see the IMAX Deep sea)
All in all, it was pretty awesome, and i'm sure that if you have kids, this is a pretty neat thing to take them too. If you get a bulk pass, you can do either 3, 5, or 7 (?) different things to do between luxor and mandalay - it made it worth the money for the two of us to do a few of the things.