@Bob & Judy-- So glad you are going on this trip. I hope you get Albert for your PD, but feel sure that others are good, but he is special!! Anyway, to answer some of your questions: (1) there were washcloths at all 3 hotels. I had carried some, as I usually do, but didn't need them.....however, I believe that GC is changing the hotel in Shanghai, and that we might have been the last ones to stay at the one we did, but I would imagine that whatever hotel they use now will have cloths, but.........and shampoo, conditioner, lotion, and soap was provided in each hotel also (2)Hair dryers provided in all 3 hotels, but see note above about changing Shanghai hotel......(3) You will need a converter (changes electricity) for charging your cameras, etc., unless your appliance is 110/220, which is probably unlikely. I took lots of different adapters for the plugs/outlets, but actually the outlets accommodated our 2 prong straight plugs.......but once, again, better safe than sorry, and I would take at least the 2 rounded prong adapter, and the 3 straight at-angles-to-each other adapter, just in case. I bought a converter a couple of years ago that not only works as a converter, but also a charger for my camera and Kindle and has the capability of plugging a regular appliance into it, but also has the USB port for plugging into it my camera charging cord and Kindle charging cord. I hope that last statement makes sense. I bought this converter/charger from Magellan's online. Really like it.......(4) We worried about the 11 pound carry-on also, but it didn't seem to be a problem. I know mine weighed over 11 pounds, but Albert said not to worry. Who knows how "strict" they will be on your trip. I would suggest that you pack as much in your regular checked luggage, so as to not only free up your carryon as far as weight, but to also have room for bringing things home. I always take a folded canvas bag (that I bought at Chico's a few years ago) in my luggage so it give an extra bag to help bring home goodies. Then I check my regular checked bag and the one that I had been using as a carryon and just carry that other bag......(5) I did not mail home anything, and I am not sure if anyone else did either. I couldn't tell you about the cost for that. I bought quite a few things, but they were all relatively small: jade necklace for my daughter, chopsticks for grandkids, stuffed panda bear (small) for a baby grandson, silk pjs for a granddaughter, small set of terracotta warrior for my grandson--if you do this, be sure it's from the museum shop, not the vendors....I followed Albert's advice, and was glad......anyway, I could not tell you about mailing home stuff though! Sorry!......(6) I always lock my luggage with TSA locks on flights anyway, but you will be required to lock your checked bags on the in-China flights, so be sure you have locks for that.
Well, I have gone on and on with more info than you probably wanted/needed. We had a great time, and even though the food was good and plentiful, we did get a bit tired of Chinese food!! If you like desserts, don't look for them there. They mostly served watermelon for dessert, which was good and refreshing though. If you want something sweet, like chocolate or cookies, better take some with you to snack on in those moments when you really "need it"!! And whatever you do, don't order a hamburger from roomservice on a night that you have free and wish to stay in the room because you are tired!! :) If you like beer, the local Chinese beer that they will offer you at lunch and dinner is very good!
I read these posts nearly everyday, so if you have some more questions, please feel free to ask. I will get back to you quickly!!