Your question's a little open ended. As far as the course goes, i can't really comment. I've seen Sandals boats out all the time, outside of a friendly rivalry between Stuart Coves and their staff they seem very together. their boats look nice and neat/ clean. I've never heard a bad word said about'em. Round here that's about as higher aclaim in itself as a recomendation!
Best bet is, if you're now booked into the course, do it. After, go for a couple of dives with Coves or Bahama Divers and then you can tell us who you favour!
I'd like to hear about it.
You'll be staying on Cable Beach on the North Coast, 15 mins from the airport. Try eating at Indigo's just accross the road from Sandals for Sushi. Orange hill just three miles West for a stunning evening view as you eat, Velagios, in Caves village just two miles west for excellent Italian ($), or The Cricket Club (Chris's wife's Chicken Pot Pie redeems Genisi's the waitresses blunt approach to customer service!!) two miles or so East. Other places include Cafe Matisse ($) in town, Lucianos for another stunning view across the harbour, Grey Cliffs for five star fare ($).
Don't eat anywhere that's not recommended, you won't "get lucky" you will get upset! Promise!
Don't eat fish unless it's from one of the better places. Not just mercury from baracuda and jacks. There's a tendancy to sell rock fish as grouper and pick up nasty toxins that CANNOT be treated. (is it ciguatera?)
Sandals seems to have lots of little sail craft and sea kayaks etc. it's a very sheltered stretch of the north coast due to "Sandals" cay a little island about a mile off the coast. There are plenty of motor sports to annoy the snorkelers and swimmers, jet skiis, water skiing, parasending etc. I don't believe these are hotel owned.
The plethora of other possibilities will be placed in you face upon landing at the airport! Dolphin encounters, water park, island adventures etc.
The beauty of the Bahamas is that you don't have to plan a thing. The curse is that you can't anyway! Try to stay relaxed and "Live long, Take your time...." as they say here.
Like a roller coaster moving through treacle. It ain't going to happen quick but you are locked in for the ride. Drink a couple of cold Kalik, mabe some rum punch and kick back, you'll have a great time!
Let us know how you go? I reckon you'll have a fantastic time!
Dan
Oh! Congratulations!