I am asking this to help a friend. I always take the Cityflyer bus to/from HKG and don't know enough about the AE and ITCI. Here's the situation:

2 people taking 2:30p CX flight out of HKG. They're staying in TST, and want to go to Ngong Ping that morning.

I think the best way is to do ITCI, but that means buying an AE ticket. The AE doesn't go to Tung Chung. So, the apparent ways seem to be:

A. Take the AE to airport, then the S1 bus back to Tung Chung ($140 AE + $7 S1 for two)

B. Get off the AE at Tsing Yi, then switch to MTR. Faster and easier.

Now, the questions:

1. If they do option B, do they need another ticket (HK$14 each) to switch over to the MTR to Tung Chung? Or will Kowloon-Airport AE ticket give them free connection to Tung Chung?

2. Do two people doing ITCI really have to show two AE tickets? If they do, I guess if their total checked luggage is within the limit of one traveler, just one person can check-in, and drop all bags with just one AE ticket.

This way, I am thinking they can just buy one AE ticket and then a regular HK$17 MTR to Tung Chung.

3. But then, can someone use the $90 AE ticket to not ride the AE, but just the regular MTR Kowloon to Tung Chung?

I guess even if one buys one $90 AE ticket plus two $17 MTRs, it's still cheaper then buying 2 AE tickets, especially if they have to buy $14 Tsing Yi to Tung Chung tickets.

4. Any other ideas?