We visited Altun Ha and it was ok. We were dropped off right at the ruins and picked back up there. All we did was look at them from the grass and got to climb on one. I guess we were expecting to do/see more other than what you can see in pictures. It also rained on us heavily and it was so slippery, so maybe that made it a so-so experience. Sorry I'm not much help lol
When I went to Altun Ha it was extremely hot and the mosquitos were ferocious. Remember however that this is not Disney Land, the jungle is real and so therefore so are the surrondings. We were able to climb around as much as we wanted. We were on a private tour which meant we had more time and were not pushed to get back to a bus. You will need to wear skin so soft here.
If you would like the name of the tour guide just e-mail me.