Geez, I remember flying into Mascot VFR in a PA24-260 in '70 or '71. We were directed to park on the grass between the runway and the taxiway to 25. After shutting down we spent the next hour just sitting on the wing watching a stream of jets and turboprops taxi past. No-one questioned us even when we walked from the aircraft across the taxiway to a gate.
A few days later when we had to move the aircraft for refuelling I remember not being able to raise ground on the radio. The only option was to shut down and walk over to the tower to find out what was happening. The door at the bottom was unlocked so a mate and I walked up to the cab. There were some startled looks when they saw us there.
Great days.