If the ship docks at the pier near the beach, there is a lovely place to go swimming. If not, you're kind of stuck in an industrial area with no idea of what to do.
My main complaint is with the Shore Excursion people. Their maps of ports did not include any local transportation information, no historical site worth walking to, not even information on restaurants. The maps provided only listed jewelry stores and other tourist traps. Very disappointing.
If one wanted to see historical areas, local culture, etc. you had to pay for any excursion. This is not typical of Celebrity. We were on Constellation in November, and their excursion staff did a fantastic job with communication and information.