In Reply to: Duty Free Change of arrival posted by travelling wombat on Sunday, 18. September 2011 at 22:21 Bali Time:
A few weeks ago I had to fly home urgently (a week earlier than planned). In the rush to pack to get to the airport I packed my receipt. When I arrived in Perth I had to show my passport, the departure date to Bali and the date I was due home. They looked it up on the computer then went onto the floor and collected the items.
Very easy - no hassle.