In the caribbean, ships tours will usually involve either a coach trip to one or two specific places of interest. Tours around the coast of the islands. Trips to the beach to swim for a few hours, and probably a Pirate boat cruise around an island at some point (not to be confused with a Booze cruise)! The places of interest will tend to be old colonial buildings, rum distilleries, view points or rainforests. All of these can be done under your own steam if you are just a little adventurous. Read about your destination, and make your mind up where you would like to see or go. Get together with another couple of two if you can, and hire a taxi. A lot of these take the form of people movers. and are air conditioned (so don't try to open the windows)! Tell the driver EXACTLY what you want to see and agree a price BEFORE YOU GET IN! They will then drop you where you want, pick you up again when you want, and take you back to the ship before you pay them. Make sure that you have the correct fare as they probably won't have change! This will cost you a fraction of the price of a ships tour, and you set the itinerary. Just one thing. You will probably notice that the journey back to the ship is done at a slightly less leisurely pace than the outward journey! Happy cruising.