Overall excellent 15 day cruise with Viking through Netherlands, Germany, Austria and Hungary. Only hiccup along the way was due to low river levels at highest elevation point on cruise near Regensburg, we had to do a "ship exchange", which only encompassed us having to pack our bags mid tour. Everything else was handled by Viking to ensure a smooth move from 1 ship to the next (identical ship, by the way, with having same room, amenities, etc). As for the cruise itself, every day we had an excursion available, and many times, a couple of them, with excellent guides and smooth processes with embarking and debarking the ship. The staff, restaurants, guest services and social services/activities provided by Viking all top-notch with little-to-no room for disappointment. Definitely will choose Viking in future for another riverboat cruise with no hesitation at all. Strongly encourage guests to take advantage of extended stays of starting and/or ending cities as Viking seemlessly assists with these options.