Well, with all of the good recommendations received, we took the plunge and book the Viking tour to Tibet and the Three Gorges for next September! Had plenty of help from Shirley B on this board who handled our booking most skillfully.
Since our departure date next year is the same as yours was this year, Jo Ann, it would be helpful to get some info about the type of weather we might expect to encounter. I guess that we should start working on our aerobics well in advance to prepare for all of the climbing that we will encounter.
Upon reflection, if you think of anything that you feel would be helpful please email or post your recommendations.