191 is a very nice route, but the climb up the west side of the lake at Flaming Gorge is very steep. I'd stay on 191 on the east side. Once atop the mesa, there is a long series of switch backs(10?) down into Vernal. Go slo...save U'r brakes. Vernal is a very nice town. Get all supplies there. The Dinosaur area is kind of bleak outside the park. There is a very nice visitors center in town. Most of the, few, private RV parks are usually full of Gas/Oil field workers. If U don't need electric, I'd stay inside the park at one of their CGs.
