Couples is truly all-inclusive. You don't pay anything extra for any restaurant or drinks or water activities including diving, glass bottom boat ride, and snorkeling. Couples really is the most inclusive all-inclusive. If you want to do the dinner on the beach, this is an extra activity that is not included and there is a Manager's special wine list that is not included. Otherwise the only other thing you pay for is spa services.
As far as the most lively resort, it really depends on the week you are there and the crowd at the time. I suggest just looking at all the resorts and read the reviews of them. One resort will eventually stand out to you and that's the one you should go to.
Juliann & Jeff
Jamaica Soon Come