We just returned from a miserable trip with Viking on the Elbe. No warning of low water until we reached Berlin for start of tour. Turned out to be one long series of bus rides while sleeping on the boat. Viking could have/should have cancelled the trip or at least re-scheduled later. Upon return, I called their office and their attitute was "TOUGH" and offered a 50%(from list price) coupon. BIG DEAL!!