I have an excursion booked in Cozumel from 10 am to 3 pm on 7/17/12. Carnival Legend will be in port from 8am to 4pm. My excursion will end in town and I will have to take a taxi to get back to the cruise terminal (It appears to be a 10-15 minute taxi ride). On carnival.com, it states that you must be on the ship 30 minutes prior to departure. Can anyone tell me if it is feasible to end an excursion at 3 pm, catch a taxi and get back to the Carnival Legend by 3:30. Will Carnival refuse admittance if it is a few minutes past 3:30 even if the ship is still sitting at the dock? I have never cruised before, so I want to make sure I am doing things correctly. Thank you.