Yes, Magical Express runs around the clock/as needed. After 10, you do need to pick up your own luggage. Granted, DME will grab/transport/deliver tagged luggage the next day from the airlines' unclaimed luggage offices... but they're not responsible for it overnight. Frequently, the luggage sits on the carousel for a while after it stops running. An airline employee pulls it and piles it outside or inside the unclaimed luggage office (depending on the airline/policy/size of office). Then, too, the office may or may not be open overnight depending on incoming flights.