In Reply to: TRS at Adelaide Airport posted by jamar on Monday, 2. August 2010 at 14:55 Bali Time:
Yes it is once you are through customs and in the international departure lounge.
You walk through the duty free shop and then turn left. You'll see it quite easily, just go up to the counter and press the buzzer.
I don't think there's a cut off time as such, but I wouldn't leave it until your final boarding call. It doesn't take very long, maybe 3 or 4 minutes.
They just look at the goods, check your tax invoice and then refund you the GST portion by swiping your credit card.
Do your TRS first, and then duck back in to do some last minute duty free after.
Hope this helps.