My wife and I boarded the ship on Aug. 16, and stayed on her until Sept. 14. We do not do "formal," and chose "Anytime Dining," and ate in the buffet for the entire time except one night in the Crown Grill.
We could find nothing bad to say about the entire experience. I must say, reading the "down" reviews, that it seems people are really nit-picking. The food was fine, the coffee was good, and the service was outstanding. By simply being observant, we were able to see some really interesting things, such as a "Mola-Mola" sunfish on the surface near the Guernsey Islands, and a couple of whales near Iceland.
As far as the ship was concerned, our cabin was very comfortable, and our steward was always at our disposal. A couple of times the toilets briefly didn't work, and we were told it was because somebody nearby had clogged theirs by putting something in it they shouldn't have. The entire crew down to the "black gang" and deck hands were polite and cheerful.
We were glad we were on Deck 9 (Dolphin) as it was quiet, and centrally located. The cabin itself was reasonably spacious, and the bed very comfortable. We both slept well during the entire cruise. The only discrepancy I noticed was that hot water tended to come out of the cold tap - easily fixed by adding ice.