We are sailing on the SUN in Feb. and are taking one ship tour in Belize, Altun Ha. But we want to do our own thing in Grand Cayamn, Stingray City and Seven Mile beach, any advise on tour co. to use? Since this port visit is not very long, will we have time for both? I also heard that if you don't take a tour organized by the ship then you may take a longer time in departing to shore, if so how long is long? One more thing, we would like to snorkel somewhere near seven mile beach, any place specific?