I found the staff to be most helpful and pleasant both times I stopped in -- once on the way to Colorado, the other on the way back. The Chief Ranger went to the trouble of printing out some weather reports for me as I was planning on camping in Western Colorado that night.
On my return visit a week later, another ranger remembered and welcomed me back. She gave me directions to the library and to grocery stores, plus mentioned what was in the museum exhibits and told me I might qualify for a senior discount (50%). I gladly paid that reasonable fee and proceeded to enjoy the exhibits. Any kid who's a fan of dinosaurs would surely enjoy both the indoor and outdoor displays..