I am planning a Costa Rica trip and need to know if there are any age limits for the zip lines / canopy tours. There are children in the group. Also, if there is an age limit, is it possible to leave somebody behind with the kids while a group goes on the zip lines, then the adults switch. Basically, is there a place at the beginning of the zip lines where people can wait? I know there are a lot of zip lines, but does anybody have any feedback they might be able to provide. I have started e-mailing some of the zip line places as well.