At 9:00 AM in the port, look for Gina or Captain Martin Gato, near the Ultramar ticket stand, beside the main building labeled "Terminal Maritima Punta Sam" Tell them you have a reservation for Isla Mujeres snorkel tour from ContoyExcursions they will indicate the boat for the tour.
09:00 AM
You can cancel up to 24 hours in advance of the experience for a full refund.
up to 24 hours before the experience starts (local time)