You don't have to vote in Australia. You just have to show up so it proves you were able to vote without impediment if you so choose to. You could draw a penis on it if you even could be bothered.

Voting typically takes place over a weekend in Australia and you have plenty of time to do it. You can also postal vote or absentee vote in advance fairly easily if you wish too. Polling places are literally like every school so there's always one nearby too.