I have heard that they do their interviews in melbourne at the old ansett sim centre.the sim is very pitchy and so unlike actually flying a real king air.So there fore if u havent flown a king air then it shouldnt be any problem.
i would presonally suggest to go there a day in advance and book a sim time for an hour or if you got a mate who can share the sim with you then go for it.
they get you to do a ndb rwy 16 and the ILS. just make sure you know the approaches for melbourne and melb Essendon pretty good.It all happens very quick so make sure you know what to do.
its a half an hour sim check and sort of an hour interview by three guys.
know your IFR procedures thoroughly ,LSALT ,DR etc etc
all the best