I went on the tour a few years ago. The ruins are good. Not as spectacular as Tikal in Guatemala but very good. What makes this trip as good as it is is the travel to and from. When I went, they picked us up at the dock in front of the hotel in San Pedro in a small boat. We then boated to the mainland and up the river. Along the way, we paused to eat a light breakfast in the boat, stopped at various spots to look at some wildlife. We got off the boat at a little village called Bomba (sp?). There you can buy trinkets from the locals while waiting for the bus. We get on the bus for a ride to the next river. Then onto another boat for the ride up that river and to the ruins. I don't remember the operator but our tour guide was a guy named Daniel. He was really good. Someone on this board should be able to tell you who he is with.