I am closing in on 570k points and am hoping to take the family (2A 2C) to Europe. Ideally Melb to Phuket to London, (ferry to France, then road to Rome, then ferry to Athens) Athens to Istanbul, Istanbul to Hong Kong, Hong Kong to Melbourne. Qantas does not fly to Istanbul, but i expect other One World carriers do have flights from Istanbul to Hong Kong. My question is, if i want to use my Qantas points on an airline other than Qantas, do i have to join that airlines FF club as well? Using the flight route maps on the Qantas website, there is no route to or from Istanbul. Can anyone assist with info on multi leg flights using FF flier points with other airlines? Appreciate any help you can offer.