My wife and I are going to spend 3 weeks in Guatemala from the middle of September and we would appreciate any help in planning our itinery. Thank you in advance.

It might be a good idea if you would tell what you are interested in, what sort of leisure activities you usually enjoy, what your budgetary constraints are and what your energy level is. Also, which specific places do you know you want to see there and which do you think look interesting?

guate-xela-todos santos-xela-lago atitlan-coban , semuc shampey-rio dulce-tiakal-guate on overnight bus - straight to antigua-shuttle anitgua -guate for flight

Blue, if I were trying to be psychic, I would add Tikal to your list and Uaxactun and Yaxha as well, and I would drop a couple of what you listed. There are other things, such as the museums in Guate and the ruins at Copan. These are logical to see for many, depending on interests. With three weeks an energetic person would have time to see El Mirador and even Nakbe. And hey, what about seeing some of the newer finds in Guatemala instead?

The person is long gone and has departed without wishing to give more information. So be it.