mostly you are catching people in a happier state of mind (on vacation)
but still what they are at home does show through sometimes more than others, it depends if they are unhappy at home with work or where they live,m how much camping or being on vacation changes their "well being"
the differences seem to arrise depending on where you camp,and where your fellow campers there are from.
I have met more good than bad, and a much higher percentage of good than bad as compared to a urban center, but about the same as a rural area. so demographics play a big part.