Good place for an overnight, unless you are here for one of the events. We just needed a place to stay the night, but there were a few other campers here for the Horse and Bible show going on. It was a little confusing which gate to enter and which area to go to, but look for the signage for "Desert Sage Event Center Archway Gate" at 44.035800,-116.972900.
We chose to stay out in the boondock area, just a big open dirt lot, bumpy and lumpy but level enough. We left the sites with water hookups for those who were there with their horses. We did stop and fill our water tank on our way out though.
Good cell reception and easy access. Self pay with an envelope and drop box. We never actually spoke with or saw anyone in charge.
Just outside of the gates is a dump station that isn’t related to the event center, but is run on a $5 donation basis. 3 day stay limit for RVs. We stayed here through Passport America and paid half the rate, but full rate is $30 for partial hookup sites and $15 for the boondock area.