I did speak with the Tourist Camping/Caravan area at Marla late yesterday re- travel numbers.
Said the season started very early this year with a constant stream of holiday travelers North & South, plus the Park area nears to capacity most nights.
Plus is more fuel tankers delivering up and down the Stuart etc.
A friend did make contact last week and informed me most Rest Stops are filthy ie ( slices white bread with Vegemite smears) blowing in all directions...mongrels.
Either way, make the most of your journey and stay safe....Cheers