Combine a catamaran cruise to a castaway island with a standout snorkelling experience. Set sail for the paradise shores of Mexico's Isla Mujeres, stopping at Punta Sam or El Meco for a snorkelling session and an introduction to Cancun's famous Underwater Museum, where you may spot one or two of its intriguing submerged sculptures. Then, head to the Isla Discovery beach club, where an afternoon of relaxation awaits, complete with all-inclusive drinks and a buffet lunch.
