I have got some flexi fares coming up for the family these holidays Brisbane - Cairns. I left my run a bit late and missed out on using my comp upgrades as there are no business awards left on the flight. I do note there are two paid business seats left on our flights. Has anyone had any luck upgrading last minute i.e checkin/lounge where there are no award seats left but vacant business seats? All my upgrades are due to expire in October.