Consider this port-intensive cruise for your next tropical getaway. Serenade of the Seas has plenty of sailing dates between November and April to choose from, and the best part is that fares start at just $449 per person. These seven-night cruises depart roundtrip from colorful San Juan, Puerto Rico, and visit St. Thomas, St. Croix, St. Kitts, Roseau and Barbados. There's only one day at sea planned for this itinerary, so be ready for activity and adventure ashore. Plus, when you book an oceanview or higher category cabin with Cruise.com, you'll get a complimentary spa treatment or dining in one of Royal Caribbean's specialty restaurants. Be sure to visit the Cruise.com Web site, linked below, for fares and specific sailing dates.