This was our second Viking River cruise. Did a pre-trip extension in Berlin which was fab. Right in the heart of the city @ the Hilton, w/i walking distance of great food and prominent sights. Saw the Queen of England, spent a day in the main train station just train watching & exploring, and enjoying sight, sounds & tastes of Berlin. On to Potsdam, our ship & headed to Wittenberg. My wife had a slight mishap and tripped going up the stairs from the dining room, and badly bruised her left leg and knee. For the rest of the trip, Sandy was the toast of the whole staff, with one staffer offering to give Sandy a shower. After a few days she was using a wheel chair to get around, but I continued to see the sight at every port. As we headed south on the Elbe, the water level kept dropping so that by the time we got to Meisen, we had to stop and do our remaining tours totally by bus, which was ok. We understand from local service providers that this happens frequently on the Elbe in summer. Plus we were in a major heat wave with temps getting to 95F (however, we were given a nice cash incentive when we book our next trip). Got to Prague where we also extended. My highlight was staying with Family in Litvinov & seeing where my families were from in Masti & Ujezd nod Zbecknem.