I have dove with Sandals Resorts in many of their Jamaican resorts. Jamaica is not the best diving in the Caribbean but it beats diving the cold Jersey Shore waters hear in the northeast. As a Sandals guest you get two to three dives a day free of charge (well except for the price of a Sandals vacation), plus some optional pay for dives. They don’t take off resorts divers,
but if you are not book with a resort yet you might want to consider Sandals. Morning dives at most resorts are reserved for certified divers and usually take on deeper dives, walls, and drifts. Afternoon dive are new bees and resort divers. Book dives as soon as you get there as they might require you to do a check out first dive.