Lucky Aussies. This is what I would like to see in my country, being able to pay the cashier with bitcoins, a real Bitcoin use.
I prefer them to go for LN rather than main chain transactions, or both. I find it increasingly less appealing to see merchants jump on board with the fees being too high for most people to be comfortable using it.
It's pointless to do some low value grocery shopping when you pay a buck or two in fees, especially with how speculators bump the fees by using higher fees to front run other people's transactions.
It may sound a bit harsh, but that's just how the reality is. Fiat payment options or just cash work better for in-store payments and are cheaper than main chain transactions. Innovation is accepting LN, especially for a supermarket.