Rich, I'll be on the boat with you! I think there are 6 of us in our "group," coming from all over. Four of us have been on this boat before, one is also doing his first liveaboard though. (don't know the last guy). This boat has the BEST crew of any boat I've ever been on. (wait... maybe not better than the Nai'a in Fiji...) Crew are Brits and Americans, usually. The captain is just a great person, but she runs a very efficient ship. The engineer is her husband, and he will just be coming off a long recovery from a very badly broken leg... if the doctor clears him, that is!
Anyway, not a lot to add to what others have said, but of course I'll add a few things:
unless things have changed, BYOB if you want hard liquor/mixed drinks. They provide wine every night at dinner, and beer and soda are yours free at any time. But if you want a Gin & Tonic, or Rum and Coke, or something else, visit a liquor store before you get on the boat. We always then just donate any leftovers to the boat's supply. (why did I start my tips off with alcohol??)
If you need to charge batteries, there, is, in fact a charging station in a little room off the dive deck. Intended primarily for the UW photogs, there is still plenty of room for me to slip in and charge my phone, or the batteries for my puny point-and-shoot land camera. Lots of power strips there, so you can probably leave yours at home, if you want.
There are DVD players in each cabin, as well as for the big flat screen in the main lounge. I never care about this, as I read about 2 pages in my book after my head hits the pillow, then conk out. But some people like to bring movies to watch in the evenings.
They have shampoo and conditioner dispensers both in the shower in your room, and at the freshwater shower on the swim platform on the stern. If you're not fussy about the brand, you shouldn't need to bring any of your own.
Soft-sided luggage is best, and you should try to slide it under the bottom bunk of your cabin, but the crew WILL take it away and store it for the week, if you really don't have room.
Dinner is a sit-down meal, breakfast and lunch are served buffet style. There is a small refrigerator in the salon, stocked with I'm-not-sure-what, I know yogurt, and leftover desserts from the night before. It's free game if you're hungry, but they leave candies on your bed morning and afternoon, plus there's usually a jar of cookies in the salon, and they serve platters of snacks both morning and afternoon between dives, so I can't imagine being hungry. Help yourself to coffee, cold cereals, and bagels in the morning, if you can't wait for the cooked breakfast. They will greet you with warm towels at the end of every dive, but you're not allowed to be in the main salon with anything wet, so you have to leave the towels on the dive deck, and change out of your wet swimsuit if you want to sit in the lounge inside (yet another reason to bring multiple swimsuits!)
DO bring something for motion sickness, as there can be some rough crossings between islands. What else? It's pretty much eat, dive, eat dive, eat, relax in the sun, dive, eat, dive, eat...
See you on the boat!