I am a little nervous about these third party excursions, but they seem to be the less crowded option. I am specificly looking at the JOSE CUERVO® TEQUILA EXPERIENCE AND CHANKANAAB PARK in Cozumel and ALTUN HA MAYAN RUINS WITH CITY TOUR in Belize. A trip to the Mayan Ruins at one of the ports is a must, I am just not sure which ones are better. We are going to Roatan, Belize and Cozumel.