Inquiry Submission By RickHansen

Hi, when travelling I usually buy duty free alcohol at the airport and it goes as carry on. I have been reading and am confused on what suits. We have flights from Siem reap to Bangkok for an hour and then back to Brisbane.

Can I buy at Siem reap airport or Bangkok airport? If so it would have to be carry on as you would of checked in to get to the duty free shop. Can I take it off at Bangkok and back on to head to brissy?

Or do I but at a shop in Siem street and pack it in my luggage and claim in Brisbane?

What is the right way to do it?