The best way is to take Bus A21 and alight at Prudential Center which is across the street to your hotel. I think if is very convenient for you to take Bus A21 to and from Airport, Airport Express Travel Pass seems unnecessary. Yes, Disneyland is near the airport, your hotel is close to Jordan MTR Station, you can take MTR to Disneyland. No, you can use Airport Express from Disneyland to the Airport.
So, if you are going to stay for more than 3 days in Hong Kong, I recommend you buy the ordinary Octopus Card, it can be used on most transport in Hong Kong and of course with certain amount of discount.