I received a promotion email from Qantas for my birthday. It seems you must born in December for it to work. Birthday Promotion
""Enjoy 15% off a reward of your choice at the Qantas Store
Using your Qantas Points at the online Qantas Store* is a great way to treat yourself to something perfectly suited - because it's been chosen by you.
To celebrate your birthday month, we're giving you a 15% discount** on all products in the Qantas Store, excluding gift cards and charities. To use your discount, simply enter promotion code BDAYDEC15 at checkout. ""
just tried, says expired - may only be designed for you!