They get to hold on to their own dressing room while England will prepare for the big match in the visitors' quarters.
The Wallabies have also opted to train at the Olympic stadium on the Friday.
And they've chosen God Save the Queen to be played before Advance Australia Fair, the Oz anthem.
But it's still possible for England to equalize
Meanwhile the England squad have been unwinding on a Sydney beach in the count-down to the big day.
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