Just Show Up!
My advise is to enjoy your time before your board the Cathay flight to Hong Kong. It was the best flight I have ever had as a passenger in 20 years!!! As for preparing, don't worry about studying in advance. The first two weeks have you writing the HKG CAD exams, and you will be well prepared during your time here for sucess. As for anything else, they have an excellent program laid out for you - I was told not to go too far in advance, but don't fall behind either. You will have enough time during the program. Lots of self study required, but you already did that to get to where you are now. As for your stay here in the hotel, it you wish to take full advantage of the gym, make sure you have some good workout shoes and shorts - hard to get for larger "Western" sizes without going deep into Hong Kong. Everything else you need is only a 5 minute bus ride to the shopping mall in Tung Chung.
Cathay City awaits