If you're looking for sun, sand, and surf (not to mention those frozen drinks with the tiny umbrellas) this winter, a Caribbean vacation is a wonderful way to escape the cold and relax. Not sure which isle you'd like best? With their palm trees and white sand, they may look somewhat similar in brochures, but each island has its own distinct personality. Some are lush and green with waterfalls and jungle-like foliage, and others are arid and flat, with wide beaches, pale blue water, and a totally different look. The perfect solution: A cruise that visits a variety of different islands.