No need to worry about taxi, Caribe Island provides transportation to and from the resort, all you need to do, is to let the resort know exactly the time that you will be arriving and the amount of persons that will be traveling.
They also have a daily shuttle that leaves the resort on a daily bases, Hours are 10, 1, 3:30 and 6:00 and return at 9:00pm.
The resort can also arrange your golfcart, for amount of time that you will be staying. Enjoy and have a wonderful time at the resort, make sure that you ask the bartender Albert, he makes some mean Bailey's Colada and Rum punch the best on the Island.