Hi, docking at 8 in Playa del Carmen (CAlica, ca. 15 min from Playa)...your best option (if you make it, sometimes is takes time to dock and disembark) is to catch the 9am ferry to Cozumel (ferries are mostly every hour), arriving there at ca. 10am...cost for taxi to playa is ca. $10 and ferry is $12 per person...then if you take a shore excursion, you must take a taxi to the ship's pier, which is another $10....I think it would be quite a hassle to do it and then also costy..up to you. Greetings!