My husband and I are travelling to Peru in a couple weeks; we are taking a GAP tour for 8 days, including a couple free days in Lima and Cuzco, and hiking the Inca trail to Machu Piccu. Anybody have advice, suggestions for us? Especially for things to do and places to eat in Lima and Cuzco? Advice for the trail itself? I'm very excited, but also a little nervous, as I've never done such a hike before!