We have been Viking fans for many years but this was our first sailing on the Sun. Our biggest issue was intermittent sewer odors coming through the ventilation system (not from the bathroom area). Although maintenance and Engineering attempted to resolve, they did not resolve, possibly because this is a design issue or requires a bigger fix than they could do at sea. Either way, Guest Services management was totally unsympathetic and offered no apologies, etc.
One really nagging concern is that we were upgraded from a Penthouse Veranda on deck 4 to a Penthouse Veranda Junior Suite on deck 8. I can't help but wonder if they had previous sewer odor issues with this room and this was their attempt to get by until they could get a permanent fix?
Noise level in this room was unusually loud and apparently came from doors slamming immediately below the room in crew access corridors or ?
Food service often was very lacking in the World Cafe (sometimes nearly had to tackle waiters for beverages) even though they appeared to be adequately staffed. Perhaps this was a training issue related to the rapid growth.
The quality of entertainment from the on board musicians poor. Again, this was very different from all our previous Viking experiences.
Optional excursions ranged from poor to good (but none "great") and most of our's were expensive (more than $200 pp). With tipping and other costs included, the Viking price point and value is not what it used to be.
Although I left similar comments with Guest Services and on my end of cruise survey, I have yet to hear any response from Viking Management. We will likely stick to Viking river cruises going forward and look to other small ship cruise lines for ocean cruises.
See above comments about the unresolved sewer odor issue and excessive noise.