When you get off the ship you can either take water taxi ($7 roundtrip) or walk to downtown and beach area and we took a taxi which was fine.
Be prepared, when you get off the ship you will be approached by probably a dozen people trying to get you to do this or that, give you money, etc. The big thing is the jewellry stores there.
We rented a beach chair for $15 a day from a lady on the boardwalk. She showed us a chair but came back and got mad at us when we moved to the front row by the water because apparently they cost more which she did not advertise.
The beach and water is beautiful, relatively warm and clean.
After spending some time swimming we went shopping a little bit and ate lunch and the Blue Bitchin' Bar (or something like that). It was great food and drinks and good entertainment. I would definitely recommend this place!