Thanks to JMH I can say the Dingolfing tour was really great. The wife and I enjoyed it quite a bit.
The company we work for has many Plant, Ship, and Offshore customers so walking through a managed area, manufacturing, and construction environment is something I have done on many occasions.
The Dingolfing tour was much more "realistic" or "down to earth" if you prefer and not a bunch of kool-aid. For example, the guide could have been anyone off the street - no fancy suits, queue cards, or theatrics.