Hi, Graham,
Very few pointers,
1. The 4/5 star hotels provide everything - take half what you think you need.
2. Leave room in your suitcase - even if you do not buy stuff on holiday, you will - the jade factory was unbelievable - difficult decisions - do I get the 900,000 or the 700,000 Yuan hand carving ???.
3. The guides will tell yiou everything, but do not forget, Chinese drivers regard red lights as optional and the green man is of scenic value only! however, the Chinese prefer not to run tourists over.
Enjoy,
Mike