There are campers for rent, so they can do that.
Years ago I took a woman to a ten day rendezvous. She hadn't done much camping before. I found the afternoon of the second day, all of the potable water was gone. I asked her what happened to it? She took a bath.
So, I had to go carry water about a quarter mile, and schooled her on water conservation when camping. She started bathing daily in the river. It was met with approval and appreciation by the men, and disgust by the women. She was stacked, and not at all shy.