We have cruised Princess, HAL, Celebrity and NCL before. This was our first Viking Ocean cruise.
We arrived in Olso 2 days before the cruise and on our own booked in advance a "Norway in a Nutshell" 12 hour tour to Bergen as recommended by Rick Steves. It involved 3 different train rides, a Fjord boat tour and a bus ride all in one day, all very spectacular. Although unaccompanied, all the connections worked like clockwork and it was substantially less expensive the the Viking pre-cruise tour. If you wish to take this tour, reserve far in advance because it always sells out.
Embarkation in Bergen was very smooth with no lines. The ship opened for boarding of all passenger classes at 11:00 am with all access to the ship but not for staterooms. Access to staterooms depends on class with suites having earlier access. As we were DV we had access at 2 pm.
DV Cabin is a relatively small cabin compared to other non-suite cabins we have sailed in. There were only 3 drawers and one shelf available, plus a high shelf over the closet, so it really had a lack of storage space for two travelers. Unlike other cruise lines, Viking has no overhead storage compartments above the bed. The vanity table pull up on the desk was impractical and wasted the already very limited counter space in the room. There were no hooks whatsoever in the room (other than in the bathroom) so consider bringing some of your own - the walls are metal, so magnets will work.