We did the Paris to Prague itinerary. Was wonderful but very busy. Morning tours start at 8:30; dinners finished around 9 pm most days. But you do a lot and see a lot. It being medieval Europe and all, expect hills, cobblestones, and uneven pavements.
The breakfasts and lunches were great. The special German lunch on the sun deck was great and fun. The dinners were less than they could be, but the wine was very nice.
Lovely ports of call, and Paris and Prague are both so beautiful. Guides were all excellent. Great trip.
Only complaint was the smoking all over the outside of the ship - could not get away from it. Wish is was restricted to a smaller part of the ship.