If your main goal on vacation is going home with a tan, then this itinerary has your name written all over it. This is classic Caribbean: sand, sun, and lots of people having a ball in paradise for a week. This part of the Caribbean ranges from large, heavily touristy islands — such as St. Thomas, St. Maarten, and Puerto Rico — to much quieter places, including Jost Van Dyke in the British Virgin Islands, where you’ll find quiet beaches, yacht-filled harbors, and beach bars that let you sip with your feet in the sand.