My husband and I went on a tour from October 28. Much of the tour was not completed. On the 2nd day, the tour program was replaced by Krakow. The Germans kept us on the road for almost 5 hours. Day 3 - Potsdam was canceled, replaced by the Pergamon Museum. Sorry, but this is not an equivalent replacement - go and visit a city or just a museum in the same city (for the same money).