I'm visiting China next spring. My husband is working at the worlds fair in Shanghai. I have seen websites about hiking and camping on the great wall. I was wondering what the hike was like physically. I'm 45 and out of shape for a hard hike but have time to train for it. Just wondering if the tours are good or is there something you recommend that is just as wonderful. Last worlds fair we hiked to the top of Mount Fuji for the sunrise ceremony. I was wondering if this is as wonderful?