What I've heard about AUS is that it is incredibly complicated to get your foreign ICAO license validated for flight in AUS registered aircraft, due to security checks etc. Generally not worth it for just a flying holiday, even if the only thing you want is Day VFR PPL privileges.
So most likely you'll not be able to fly as PIC, but you'll either be a Pax alongside a CPL, or Pu/t alongside an FI acting as PIC.
If you want the Pu/t hours to count towards license issue or revalidation, make sure that the instructor countersigns them, and preferably collect some sort of paper trail as to the number and types of exercises you did.