Indian Pacific Wheel Race - IndyPac - IPWR

I haven't actually looked at the route much, just knew it hit Radelaide and Melburn so figured it'd have decent towns in between. Sounds same as TABR then. You need to call before like 8pm or something to secure something miles down the road.

Did you consider the caravan parks at all or just hotel, motel stuff?

I had a "nice" kip in a campsite toilet/shower blocks near Blue Ridge Parkway.

I went to a caravan park in Millicent (after finding the hotel that I had booked on booking.com at 8:15pm all locked up) and thought about it, but there wasn't any spot that grabbed me. So went and slept in a field outside town where a bit quieter.
In the remote areas there is often a campsite / rest area on the edge of a town. A couple of times I slept on the picnic tables that they have.
I did a couple of nights on benches, one in a street and one outside a roadhouse that was meant to have been open.
One night on the grass in a park in the middle of a biggish town.
I just did one night actual bush camping in the middle of nowhere, basically in an ants nest.
I had four nights in hotels and one that I rode right through