Nice Blog!
You are lucky to be on a part of the Great Wall that is not crowded! Usually it is full of people.
We went on the Yangtze River Cruise last year as well. It was pretty relaxing. Did you go into the small boats to the "Little Three Gorge"?
Din Tai Fung is a famous restaurant. They have opened up a few in Sydney as well.
Sounded like a very fun trip :)