We took Myan Ruins tour and guide was good. The problem with this tour is that the guide talks a lot at each location and you end up standing for over an hour. Kids on the tour were bored quickly and went on ahead to explore on own. Older people also went ahead as had trouble standing for such long period.
Four took Turtle Farm and Lunch excursion. Lunch was very good but swim with turtles includes only few fish and one small turtle and you cannot touch it. Turtle raising area interesting but could cut about hour out of this excursion.
One took local bus and hiked a couple trails. People very fiendly and bus very inexpensive vs cabs and tours.