Called BITD yesterday and as of know they are quarreling with BLM about spectator areas. The race is a couple of weeks away and so far...I believe only one to two area are designated. I have reservation, I might cancel though.
From my experiences in Pahrump it is a pretty good race to watch. You can see them off the start, and they get on it. There is one small road crossing you can watch at. and there is a spot to watch where there is a jump. 2 vids from here are from that spot, here they are. plus there is the chicken ranch there, but very expensive.
If you can get ahold of a chase booklet, it can be really fun to try and follow the cars around and watch from different spots. Way more fun than sitten in one spot for the whole race, especially since its not a lap race.