Originally Posted by
richie9x
I think if the FA is stopping passengers drinking their own duty free it might be due to airline policy rather than licensing laws.
The safety announcement on a number of airlines advises you cannot drink BYO. I can't specifically recall Qantas mentioning it, but definitely JQ/3K, DJ, and NZ. Probably not so relevant on QF as you can get free booze anyway with any ticket trans-Tasman.