The tickets on the way to Japan have a stopover in OOL (gold coast) for 2h 50min. The return flights have a stopover in CNS (Cains) 2h 30mins.
All four tickets have 7kg carry-on and an additional 20kg check-in luggage.
All four flights have ONE free date change to dates with the same priced flights, with no additional charges. You will only be charged the price difference on the flights you are changing to.
There are no route changes.