Also years ago ... I was in my little Toyota Chinook camper at a state park in California when a big Class A pulled in - there weren't nearly so many of them then. Later in the day Hal Holbrook climbed out and took a walk. He was keeping to himself and I left him alone.
Patrick Wayne on an airplane and Ralph Nader at D/FW. If we're going to stray from the OPs camping question, I could start a long list of musicians and race drivers, starting with, say, Mick Jagger, Joe Cocker, Bonnie Rait, Eric Clapton, and many other of those guys back when my brother was playing trumpet with the Rolling Stones (he is the trumpet and trombone on all the early 70s hits), and Mario Andretti, Phil Hill, the Rodriquez brothers, Dan Gurney, etc., back when I was racing sports cars. I have a poster from a Sebring race covered with autographs of a lot of the most famous racing drivers of the time.
But the best story I've ever heard was a friend who was waiting for a flight at an airport, standing next to an African-American couple, and couldn't restrain herself from verbally admiring the woman's earrings, which were large and colorful. They chatted about that for a few minutes, and then she said to the husband, "You know, you look very familiar. Have we met before?" He reluctantly admitted that he was ... Jesse Jackson. She wanted to crawl through the floor.