With OZ Domestic QP's, I only show my card, never BP.

In MEL only once in the last two years have they not scanned my card to check for outbound flight. SYD scanned it about 50% of the time until this year where they have not scanned it at all. BNE have simply not scanned my card in the last two years. With the other domestic lounges in Oz, including CNS, they can be very "helpful"; checking your "booking", seat allocation, special meals etc.

QF WP is correct; we should not leave it to chance. All that's required is the use of standard Qantas T&C's for lounge access.