Pot8o

Well… Judging purely by the large “Vote No” posters either side of the gate into the polling station, I’m guessing solidly “No”

Also have shit memory for these things (yay ADHD) so from experience yes you can do it through the ATO.
I don’t remember (lol) the steps but I think you just choose which tax year you want. It’s pretty easy is what I do remember!

Mate! Where do you think you are?
Fire up the barbie is how we’ll eat 'em.