Hi we are planning a family vacation first week in Aug. I am on the fencebetween Sanibel and Key West. I have two older teen girls, 17 and 19 and on 13 y/o boy. Reading some of the reviews on Sanibel, it seems the island is very laid back. I am concerned that the older girls may become bored. Suggestions on things to do? And places to stay, Looking at Loggerhead Cay, Compass Pointe and Sundial. Thanks.