I come seeking advice/tips/recommendations.

Unfortunately not for me but for my brother. He will be hitting your shores for about 6 weeks from late November through to January before moving on to New Zealand.

He's seeking information and recommendations of places to visit and activities to do.

He thinks he will be going to Adelaide, Melbourne, Canberra and Sydney, although he is open to other places depending on whats there or things you can do.

Any information/tips would be greatly appreciated.