Can I pick up hong kong airport express travel pass at the airport early in the morning?

Hi, We are planning to go to HK in a month. Our flight arrives at 6 AM. I plan to purchase the airport express travel pass online but it stated it will have to be picked up at the MTR Airport Express stations. Will there be a station (with staff) open at 6AM? The customer service office hours stated open time of 10:30 AM. Thank you!