In case you are using the passenger ferries on Dec. 24 and 25, you might want to be aware of slight changes in schedules.
On Dec. 24, the last ferry from Cozumel will depart at 8PM and the last from Playa at 9PM. On Dec. 25, the first departure from Cozumel will be at 7AM , the first from Playa at 8AM. All other departures remain the same.
Also some changes in the car ferry shedules but doubt that impacts many here.