First off, there are no beaches on the Yucatan Peninsula's Riviera Maya, stretching south of Cancun., that you would call anything less than paradises of white sand and crystalline waters. Even so, it's clear that each piece of coast is different from the others in key ways, with nuances which make them special and could tip the balance one way or another when it comes time to choose. For example, one might be the very definition of "castaway," while another has... keep reading