This is a cruise line private island experience we haven't seen before.  Our Caribbean cruise on Regent Seven Seas Cruises included a day at Harvest Caye, and it turned out to be one of the most memorable days of our cruise. And when you watch the video you'll see why. Harvest Caye is an island a mile offshore mainland Belize.  Like other cruise line private islands, Harvest Caye was developed as a beach port of call in the Caribbean for...