1. there're non-Travelux ATM at the junction heading to bus stop (right) and Arrival (straight down escalator or down the lift) as well

2. If you sure you'll take A11/2/0 when leaving, you can get round trip A1x coupons from Citybus kiosk (turn left after get to the bus bay, you'll see them on left side). Cheaper than just pay directly on board

3. MTR kiosks are always busy... If you will get the bus ticket you can get Octopus after get into town from service counter in any MTR station