The cruise made a quick stop in Progresso and then on to Cozumel. Progresso is a real dump. We went only to the small shops by the docking pier. I don't think it's real safe to go into the city, which was a cab ride away. The next day we went to Cozumel which had a lot more shops in a grouping by the pier. We walked across the street into the outskirts of the city, but again, not a really nice and clean place to be. I did enough damage to my wallet in a few hours to satisfy me. Ship only stayed there for only about 7 hours.
It was great to get away from everything - no phones, tv,barking dogs to let out/in, etc. It's also great to be waited on so much. I went with a bunch of girl friends. DH would never enjoy something like that -- he's too active, and I was perfectly content to sit in sun and read.