NSW and Victoria will quickly enforce new rules limiting gatherings to just two people. The two people gathering rule includes INDOOR gatherings.
The only exemption, is households.
If you live with more than two people, you can all be in the house at the same time. You can all go outside together, at the same time.
But you can’t invite anyone else over, and you can’t meet up with anyone outside of your household.
If you live alone, technically, you can have one visitor.
All non-essential outside trips are seriously discouraged.
If you have to buy groceries, go to a medical appointment, have compassionate reasons, have to work or study outside the home, or need to exercise, you can do so, but the physical distance rules remain in place.