Brinjen - I visited your lovely nation about twenty years ago. I stayed in Sydney about one month. Of course, I visited the Opera House. One thing that made an impression on me was how many people called each other "mate." I remember visiting in January, which is your summer season. Because I had flown out of New York, I was waring a heavy, winter top-coat. Upon entering Sydney airport [or is it aeroport?] there was a custom's officer who told me: "No need to wear that coat here, mate." If it had been a "civilian," I would not have been so surprised. But this was a uniformed custom's agent or perhaps a soldier.
Another thing that I remember was how common it was for Australians to call women "love," as in "How may I help you, love?" And they used this term of endearment with total strangers.
By the way, if you read this post of mine, I would appreciate your answering a question that I have. While in Sydney, I would occasionally hear Australians referring to other people as the "ethnics." Could you tell me to whom does this word apply? Were the people referring to recently-arrived immigrants coming from non-European nations? Does it refer to any particular race or nationality? Is the term considered pejorative or racist?