hi,

i intend to purchase the airport express travel pass (2 trips)with 3 free days unlimited ride on the MTR. However , I have the following questions :

1) on the fourth day when I used the pass to take the MTR , will I need to top up the pass or is there any value stored inside. If there is still value , is the amount deducted from the refundable amount of $50/- ?

2)