Just 8 miles offshore from Cancun, Isla Mujeres is a popular day trip for partiers looking for relaxation.

But this fish-shaped island is a worthy vacation destination in its own right, particularly for anglers and divers, or for those seeking a true do-nothing escape. Most visitors get around on golf carts (if they move around at all). Mostly, it's a walk to the beach or a walk to the boat slip.

Tranquil Playa Norte is the most popular beach and El Garrafon Reef (a national underwater park) attracts snorkelers and divers, you'll need more time.

DOCUMENTS: All visitors to Mexico are issued a tourist card upon entering the country. You must have a passport . to prove your nationality; a driver's license alone will not suffice. Guard your tourist card carefully, as it can be very hard to replace and needs to be presented upon departure.