I've booked my FF award to Oz and has the flights booked from Melbourne to Cairns so that I'd have almost 4 full days in Cairns. Qantas has now changed the flight to leave 7 hours later (orig was 6:25am now it's 1:25pm) which kills one full day for me in Cairns - can I cancel the trip now and rescedule it later or will it be a fee for it? Thanks to everyone for all your help in advance!