Non UK Two weeks in Guatemala

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We are heading out to Guatemala for a couple of weeks in 2 weeks time and haven't quite decided where we want to go when we're there. Interested mostly in wildlife, ruins and volcanoes. Has anyone been and/or recommend locations, especially for wildlife?

At the moment we are probably going to hit Antigua, Tikal and do a hike up Acatenango/Fuego Volcano, however any other location tips (or tips on photo spots at the previously mentioned location would be good!

Thanks!