browneyedgreene, we did this same tour to Xuantunich and agree 100%, this was one of the most awesome tours we have taken. I thought the 2 hour drive would be boring, done them in the past and was bored to death but this was totally different and must say that we learned more about this place than we have any other ruins we have ever visited. Yes, we stopped on the way back and had a lovely lunch, did not try the cashew wine but heard about it and it's magic of a two for one drunk than and next day if your out in the sun! Also was great that you were allowed to actually walk up onto them and the stairways etc.
Been to Belize numerous times, as safe as anywhere else. Just always be aware of your surroundings.