Our cruise was Oct 20 through Nov 1 and we got back last night at midnight so this is just a quick note for all leaving soon.
No water level problems - great cruise - and (don't hate me) loved Viking. But we had lock problems - 66 of them on this route. We did bus to several towns to avoid locks and make ports on schedule. Not a problem for passengers who loved the changes -they were to our benefit.
We went to all ports except two and Bamberg was substituted. Also went to Frankfurt as a bonus. We spent all nights on boat. We flip flopped boats (from Spirit to Europe) before Passau - avoided lots of locks this way. No long bus rides and two bonus restaurant lunches plus a German party.
We had a full load of 143 passengers and 99% of them were very pleased. Most were prepared to miss all ports and be bussed everywhere.
No rain, chilly though. Bring warm enough clothes for Germany - Vienna was balmy.
I will post longer message in near future.