The "essential" bit is the confusing part at the moment, previously, the Fed gov referred to it as including work and school, looks like the states are using it in a different context.
Looks like pubs clubs cafe's etc where people meet are a given to close. Supermarkets, doctors, pharmacies etc are a given to stay open. But there is so much grey inbetween the black and white cases that need clarity. Here in Qld we seem to have decision shy Premier, so I suspect we will follow the other eastern states but it might be about a week behind.