Cancun isn't just for spring break. This resort town on Mexico's east coast is the perfect getaway for groups and couples looking for more sophisticated, adults-only resorts. At , take your pick of seven pools, eight restaurants, and a beachside bar and swim-up bar—or stay in bed and order from the 24-hour room service menu. Want your trip to be action-packed? Go to for scuba diving lessons and classes like dancing and cooking. After dark, attend a theme party or dance the night away at the nightclub. It's all included, and all child-free.