Good news everyone! I applied for this card in January this year and used my free return flight in June/July.
On the 1st of November, I made a "purchase" from Qantas Australia which settled in a few days:
And - it came very quickly! Anyone who hasn't used the digital lounge pass before, you can access them by logging in here: Complimentary invitations
They came through with a year and a month expiry. From there you can transfer them to others if necessary:
SO if anyone (like me) applied for the points and was planning on cancelling before the annual fee comes up again - would suggest getting these digital invites first!
I am in the exact same position as you! I have already booked my free flight for December and my annual fee is coming up on the 28th of this month. Does anyone have any hints of how to get some Qantas spend? I saw the option of adding insurance to my December flight but wasn't sure if that would be charged by Qantas Assure rather than Qantas.