Just now received a notice from Viking of a change:
Due to high water levels on the Danube River near Passau, your ship will be unable to reach its regular embarkation port in Regensburg and you will now embark in Passau (75 miles east of Regensburg). As a result of these changes, we have made the following adjustments to your program:
On day 2 of your itinerary, your Regensburg shore excursions will operate out of Passau by motorcoach.
Day 3: Resume previously advised itinerary.