Pettifogger once bubbled...
Although I won't be there, my wife and I spent a week at the Divi... alll inclusive, including two boat dives/day...
I was not all that impressed (we did Saba the week before), and comparatively, it is rather poor diving... Nowhere near as good as say Bonaire, Grand Cayman, little cayman, Utila, Roatan, Saba...
Lobsters seemed abundant, and I remember a dive master ascending quickly with one - trying to be all secretive (it turned out he did this regularly for his dinner)... no one saw him but me...
My only recollection of a great dive (when is there ever a bad dive? Even in the northeast with 5 foot vis. and 52 degree water, they are all good) was "Billy's Grotto.' Lots (6 or 7) of very big (6-10 feet long - they dwarfed me, for sure) nurse sharks under many ledges...