Transportation between HKIA & Kowloon (CityView Hotel)

1) I know that I need to show my flight boarding pass in order to take the free shuttle at Kowloon if I want to go Cityview Hotel. Is there any restricition to any flight I am taking?

2) What public bus number I need to take to go Cityview Hotel if I not taking the free shuttle at Kowloon?
(a) how much is the bus fares?
(b) how long is the journey from HKIA to Cityview Hotel?