Kid kasha , here's what we do. I-10 from LA past Blythe into Quartzsite. Rose Rv park, easy to find on net . January it was 7 bucks a night to dry camp , more for hookup. We usually spend 3 nights cause that's what it takes for us to see the show and relax . Bring firewood for small campfire at night. Class A Rv, self contained , we go to the camp full of water. Dump station available at camp for a fee. Honey wagon and fresh water delivered / picked up for a fee. You can last 3 days easily with full tank of water and your generator. Rose Rv is fairly easy walking distance to the event and it will spare you having to find a parking spot cause you won't believe the traffic and how tough it is sometimes to find a parking spot.
That's for short stays . We've done that for the last 10 years we've been going to the show. Longer stays Blm property but ya gotta drive to show.
Plenty of eaten at the event. Stuff you never imagined you needed. Some good deals. Some not so good deals. Parts for the Rv . Stuff for the wives. Stuff for the guys.
Bring good walking shoes/boots , hat and cash. Some take credit cards.
10 years later we still enjoy it for 3 days. Is it dying out? Was it better 10 years ago or 20? Dunno, but you decide.
Go, have, a good time.
Gas/diesel fuel available