A few sites can accommodate big rigs. Some of the internal roads are wide, some narrow, some sites are short and narrow for the RVs that are in them, making parking difficult. You can stay for up to three nights and possibly extend one night at a time. The staff is limited with allowing long stays.
We stayed at Sourdough June and July 2013. Excellent staff; sites are semi-private with native trees and vegetation. This a good, fun place to stay. We will certainly stay again. The sourdough pancake breakfast is good plus the Reindeer Chile at night is really good. Friends recommended this campground, and we are doing the same.