Are they boys or girls? I took my niece several times from the time she was 15 until she was 21 and she was happy to lie on the beach most of the time. We did the butterfly farm, lots of shopping, explored different beaches, did some kayaking and snorkeling. Took a couple excursions - to Anguilla, catamaran rides and she was a foodie; so lots of good dining experiences. We stayed at GCBC one year and she loved it - there were lots of water sports to do and we enjoyed walking into town for dinner. That was a very rainy trip however, so we didn't get out much that particular visit.