ok - sorry if this is a repeat but i've searched and read a bunch of threads but what i'm specifically looking for is: Which of the Mayan Ruins are the best. We only want to do one of the tours; we are doing Western on the Fantasy - so Cozumel or Costa Maya? We have a DS who will be 8 when we go. He likes history and will really get a kick out of it and will love to climb on them and learn the history behind them. So any recommendations?