Yes, a bit.

A main character bludgeons an older man with a bat (unseen) while another character stabs the same older man (seen)

quite a bit of vulgar language. F word is used a lot and especially the 2 uses of cunt.

Yes, booze is a part of life in Australia as is and was tobacco and cannabis or worse. To omit these would make the depiction dishonest or censored and would lose its sense of reality.

This movie is very tongue in cheek and so not intense.