Would using QF branded credit cards purchases overseas work? Say QF AMEX or QF St. George or something ? I usually use my QF AMEX Ultimate when I shop in India. Granted, I pay $1 or so extra, but that's alright with me.
A meal for 2 adults at Chennai KFC set me back by INR 500, which is roughly $10 and I think with the forex fee it was around $10.50 .. nets me atleast 15 QF points
Now, if the overseas customer don't have any AU QF branded CC then the way to go would be the Wellness App or transfer points between family members once every 18 months ... say send the minimum transfer limit points to partner or children and after 18 months send it back from their partner or children account to themselves
This ping-pong should keep both source & target accounts active