New RCI excursion, underground Mayan cenote and fifth ave shopping? in Cozumel Posted December 9, 2015 VERY VERY unnecessary to pay for a tour for this. All you need to do it hop on the ferry to Playa, 5th Ave is right there. Any taxi will take you to Chaak Tun right nearby. That's good to know but I am doing this with my two parents who would feel a lot more comfortable with a guarantee back to the boat. Thank you.