Okay I know this question has more than likely been asked and answered before but can't think of the right search words to use so please bear with me.
If you fly Jetstar from Sydney to Darwin and then Air Asia for the Darwin to Denpasar leg can you purchase your duty free at Darwin Airport on the way out? Also can you pre purchase your duty free for coming home and pick up at Darwin Airport on arrival from DPS (via Air Asia) and then take on to Sydney with Jetstar. Appreciate help, thanks, Karen