I have, and always will, love airports.*
This quirk of mine manifested fully as an Air Canada employee during my undergrad. Fresh off of probation and armed with standby vouchers, you quickly learned that your name may or may not be called to fill an empty seat, and that the price of an insanely cheap flight is time - yours.
So, you learn how to be occupied with large swaths of time.
Personal blog for Bryn Robinson, PhD. All opinions are my own.