Enjoy your ride. I was one of the divers watching over you guys several years ago. In fact I liked it so much I'm going to take my wife back there and do it as a customer. And she's a great diver too!
You will have a blast. Remember to take tip money for your divers. They work hard for it. There used to be underwater cameras available for sale to those who forgot them. The divers will take some memorable pictures of you, your group and the fish.
Enjoy, Jeff