We booked on Ama Waterways this December for a Christmas Market Cruise up the Rhine. Departing Basel Switzerland and Ending in Amsterdam. Added a couple days on both sides to ease in and out of the trip.
When researching we had friends that told us Tauck did a wonderful job on their cruise. They had gone as part of a family trip. They are younger than my wife and I, and slipped in the comment while talking about their trip and our pending trip, "sure were a lot of old people onboard".
I am just not sure if that was a warning or saying we would fit in...
Plan to try to blog while underway.