Three girlfriends and I went through Inland & Sea Adventures to visit the Mayan ruins, do zip lines and cave tubing on November 30. Eric (the owner) was great, but so was Clarence (our guide). One cruise ship was arriving that day, but they planned our day so we would have each venue all to ourselves. It was incredible! Clarence is studying to be an anthopologist (in his 7th year) so he was knowledgeable and passionate about the Mayan ruins. They really earn their keep on the cave tubing by guiding us around in the water, especially the day we went went the water was low. They even made a separate stop for one of us on a quest for a special wood bowl. Plus Eric got us the best banana bread ever when I simply inquired about it when we met for our breakfast. Now that's accommodating and extra nice! We all agreed it was a top 10 day. The weather was perfect, but it was also due to Eric and Clarence and such a fun excursion. You will not go wrong by going through Inland & Sea Adventures.