Air-conditioned coaches come and go, kicking up the gravel. Signs advertise celebrated wines and best-value lunch deals. Tourists beam as the contents of their bags revealingly clink together. Cartons of what can’t be carried is ready to be shipped via international carriers. All around, people are laughing and chatting, slightly merrier than when they started out the morning. Then they pile back on to the bus and head home to Sydney, Australia.