Dry-camping RV is usually located just north of the pipeline.
See the map at:
https://eldoradostarparty.org/espsite.gif
There is no power provided for dry-camping RV.
Power is available for telescopes/equipment on the observing field.
You can reserve (and pay for) an RV site that has power with X-Bar Ranch.
Accomodations
I think there are still some RV-sites available.