I worked at a Sydney airport shop years ago and she would come through our area from time to time. She was approachable, easy to talk to and despite having big spooky security guys around, was happy to just go shopping and wait for her flight.
The Fijian PM at the time used to come through, crack jokes, run up a bill and then jokingly ask one of his security guys to buy all the stuff for him. He was a really funny bloke and he made our day.