I just watched this movie and thought it did a great portrayal of the nomads I have met. It was somber movie - but that was the point. Older people who have lost everything is a somber subject - but those same people who have found a way to survive/recover/thrive and that's worth celebrating.
One of the underlying themes that everyone should recognize is the culture of the RV community. Never had a problem in any campground that wasn't fixed by a fellow camper.