We did the Altun ha Mayan ruins tour. It was an interesting tour. Leticia was a great guide. Lunch was ok. Beverage was not included. Nothing diet to drink other than water. Felt pressured to buy stuff from the locals set up outside the ruins.
Port was very clean. We did the turtle center, Hell, and rum cake factory tour. The turtle center was very interesting, but I would not do Hell or the rum cake again. There is a charge to have your passport stamped in Hell.
Take a thin jacket or sweater, MDR and theater are chilly.