I'm looking for suggestions on activities to do with girls 8 and 10 - both are great swimmers and very outgoing.

there are so many activities for both adults and children to enjoy. i have gone with my daughter to aruba for the past 5 years. she is 12 now. we do the banana boats, kayaks, underwater submarine, snorkeling and she loves the Tattoo boat. it is a bbq type of lunch on a large boat with a rope swing and slide that goes right into the ocean. she'll love it. you will too!