Interesting question, Marc. And if you don't present a passport, do they take possession of your driver's license?
When we were approaching Cabo, they announced that we would have to have a picture ID to get back onto the ship. Since they had our passports, some people were going to use a credit card with their picture on it; they didn't have a driver's license. I didn't witness how that went, because we didn't get off the ship.
