Has anyone camped in Germany; along the lower Rhine to the Black Forest?
There are numerous camping sites througout Germany from very simple to luxurious. For an overview see here.
Please note that due to the size of the country and density of population camping is not as popular in Germany as it is in America. Yes, there are campgrounds, but most people camping there would be considered as lower middle-class. There is a lot of drinking and parying going on - although regulations are strict and a curview is strictly reinforced.