Car breaks down on a trip. What to do with your camper?

Based on your string of questions, honestly this setup doesn’t sound like it’s good for you.
If you’re that worried about breaking down away from home, I’m not sure how it will be enjoyable and not nerve wracking to be away from home.

Answer to you question is as variable as all the potential scenarios. But in general, find somewhere to unload the camper and stay in it while vehicle is being fixed.