This was our 5th cruise, 3rd with Viking. This was the best boat we've been on, but Viking continues to be plagued with problems. Embarkation was very smooth, as was disembarkation when we finished.
Dining: It was extremely difficult to make restaurant reservations ahead of the cruise, with a limit of 1 reservation per restaurant. That didn't get any better when we boarded...one of the staff members took all our requests, said he'd leave us a message confirming them, and then did absolutely nothing about it. The main dining restaurant (The Restaurant) doesn't open for breakfast until 8am, much too late for early morning shore excursions. And you can't just go in and find a table — get in the line and let them seat you! I have no idea why on earth they need to know your cabin number for a meal...it's all included! It just slows the whole process down, and I would not recommend going there at all for breakfast. They aren't even open for lunch. Dinners there were decent. The one day we ordered room service, they showed up with stuff we didn't order, and were missing stuff we did order. Not good.
Shore Excursions: In this area, Viking gets an EPIC FAIL. Viking's cruises are plagued with old, infirm, and obese people who simply cannot walk comfortably around a town or city. So every single excursion you take will have several people who are limping along telling the guide to slow down, etc. It drove us nuts. Even on the St. Petersburg Hermitage Museum excursion, which was rated by Viking as "Demanding", we had 8-10 people in our group who could barely climb stairs. This aspect ruined most of the shore excursions for us.
We didn't stop in Gdansk, and Viking's explanation about why, didn't pass the smell test. Our ship was sitting still outside the port waiting, and 2 other cruise ships passed us and went into port. Our captain came on the public address system and told us that the ship had been held up by wind and rough water, and there was too much cargo traffic coming out of the Gdansk harbour, and so we wouldn't be able to go in through the narrow channel. Well...how did those other, larger ships do it? Something fishy there...