My mother bless her heart decided to go on a cruise, and is taking me with her.We will be in Cozumel. Anyone ever been there? All I want to buy is some codiene, preferably without tylenol, but with tylenol if I have to. Do they sell it over the counter, or do I need a prescription from a mexican doc? We will be leaving and returning to Galvaston. That will mean customs check like at an airport right? And it is not a land border so the fifty pills wouldn't apply?