At this date... there seem to be 2 options...
1. Pick up an RV instead of a hire car, and park up at the Bend in the Road... They're around US$250 a night from Salt Lake City...
2. Pack a tent or a swag, and camp the first few nights... then pick up a hotel room once the first wave of people clear out... (some will only be there for the first weekend, we're moving on on Tuesday some time...)
Just a couple of days ago, the Peppermill casino had a bunch of rooms they were selling as part of a package with ZZ Top tickets, for the 13th... the packages are all gone now, but they may have a room left if you call them? Likewise, we're staying at the Red Garter, they don't have online booking, so they were the last casino to fill up, they _may_ have rooms...