OK, a few morel details, if it helps.
The basic plan is a whirlwind tour of the west. We wanted to try the RV more for comfort on the road than in camp.
We'll be coming from Minnesota, probably via Montana, staying in Yellowstone two or at most three days, and in the Tetons maybe two days. In Yellowstone, we expect to be mostly just stopping at the usual tourist spots, but at the Tetons we're hoping to just find a nice campsite and mostly just relax for a couple of days to decompress after the crowds and bustle of Yellowstone (actually, the rest of the gang will be relaxing while I burn a few rolls of film photographing the area). If we can find a spot with big trees with a nice view we'll probably stay an extra night - maybe two if it's also on a lake.
We haven't figured out any sort of detailed plan yet, but I was hoping we could camp either in or just north or east of Yellowstone for a night or two, then go through to the Tetons on the last day and camp there for night or two. Unless it's just impossible or doesn't make sense, I'd rather avoid renting or towing a car. Unless something really critical is only reachable by car, I'd rather just go somewhere else in the MH. The details aren't that important because we expect to return to anywhere that's really great.
Regardless of other details of where we go and what we see, I much prefer wooded campsites, and places where we can have a fire at night, and I'm willing to drive a little and/or pay more for both. I don't much care about campground faciilities other than trees and I'm willing to dry camp for as long as the rig can support us. In fact, if we're away from electrical hookups and can turn off the TVs and video games, I'd be that much happier. Solitude is the most important campground amenity I want. I've seen Grizzly mentioned on several threads - are the spots quiet and shadedr? I see ads for some RV parks boasting of things like paved parking for your rig, cable TV, WiFi internet, etc., which is the exact opposite of what I want. In fact, those are things that would make me inclined to avoid a place. At night I want to hear the wind and see stars. If I wanted to watch TV, I could stay at home.
Thanks everyone - you guys are a great help.