We went to Chizhen Itza out of Progresso.
Absolutely fabulous! We did the ship shore excursion - you definately should see these ruins with a guide. The trip to the ruins is about an hour or so and the whole way the guide gave us a history of the Mayan people, and continued on site with an explanation of all the structures. THe Mayan people were brilliant!
this trip was the highlight of our cruise.
I agree with a previous person who wrote about the heat. I came prepared with Evian face moisturizing spray, sunscreen,lots and lots of water and wet washcloths which I put on my head under my sunhat. I still fried. It is extremely hot!!