We went on a cave tubing trip with Regie's Cave Tubing (www.regtourbz.com) in mid-June. It was a blast! We were a group of 6 and had the van and the tour to ourselves. They picked us up at the terminal gates, we had a short tour of the city before we hit the highway, then were able to chat it up amongst ourselves and our guides on the ride to the caves. We were an early pick up, so we beat most of the other groups to the site and had the trail to ourselves most of the way. Once in the river, Jar and her husband got us ahead of the crowds so we could enjoy our float. They were very professional and fun. I cannot stress enough how nice it was to escape from the cattle herding on the boat to the serenity of a small group tour. We were back at the ship in plenty of time, and even stopped to pick up some cashew wine and hot sauce on the way home. Highly recommend this family run tour business. Regie's Cave Tubing (check out his website, they do ziplining and Mayan ruin trips as well).