RE: stealth camping. The parkway is regularly patroled by park service rangers. They don't allow camping in unauthorized areas, so you would be risking getting caught by rangers if you stealth camped. I don't know if they would penalize or fine you if caught, but I am certain they would make you move. There are plenty of legitimate areas to camp along the parkway, however, if you plan accordingly. If you are just trying to save money, then look for National Forest lands that are close to the parkway. I think you camp anywhere in national forests unless exlicitly prohibited.