We went on a cruise once. It was a Carnival Cruise out of San Jose, it went to Puerto Vallarta, Matzatlan, and Cabo San Lucas.

The only good part was the unlimited food (I was very pregnant and enjoyed the endless meal choices) and the ports of call, which were great as we were, for once, on foot instead of in a car. Walking through towns gives a much more in depth look and we experienced some really great things because we stopped and looked around and found stuff that was not on the guided tours, and had a great time and some great photo opportunities snorkeling off Cabo.

I found the speed at which day went to night amazing, as well as the stars.

I could have done without the boat ride from port to port though.