Angelina
I would take as much money as you can because if you want to do all the optional tours they do mount up, also the manager had a few more trips as well which were worth doing...I only managed to do one helicopter flight due to the weather, not on the ground but in the sky. Most of my money went on food as you are away for a while. There are a few trips out in HKG so take that into consideration. Also take a credit card as some flights tours you can put on a card if you would like, but many excursions are in local currency to the tour manager.
Only pack clothes for 10 - 14 days as you can do washing at a few of the hotels.
There are many hours spent on the coach so take some music or a book or sleep to pass the time.
Have fun if I can help with anything else just ask.
Cindy