IIRC, I was about 12. We flew Eastern Air from BWI to MCO for Disneyworld.

At that time, mom's car had a separate key for the trunk. When we got to the airport, we forgot the key for the trunk, which had all our luggage. We had to drive back home to get the keys. When we drove back to the airport and went to the gate (no lines, no security, no parking garage, no shuttle bus, the good ol' days), the plane left and left EARLIER than scheduled. We were put on a later flight.