This was our second Viking cruise and we are already bouncing around ideas for cruise #3. We cannot say enough about how easy it is to travel with Viking.
Elizabeth our Cruise Director was almost perfect in every way. She kept us laughing even when we had to change boats due to low water. The Insvit crew was a bit friendlier than the Alsvin crew but then maybe they were missing their first week guests and I believe that some of the crew was ill so that added to peoples' work load.
I thought Prague was an excellent add on trip and would recommend that to anyone who is considering it.