I agree with Andrea. I was there about a month ago in December. We went to Cozumel once before, and didn't care for the port too much. Its funny how one bar/restarant can change your feelings about a port. But as Andrea mentioned, do not bring anything valuable with you and make sure you have a digital watch on, because in about an hour you wont know the second hand from the minute, etc. But yes, if you like to drink, then dance, then munch on some "decent" mexican food, that's a must see. Enjoy!