I just went on a cruise at the end of October on the Gem. We ate once in the MDR (had pork- tasted good, but the portion was TINY). We also ate at Magenta's, where I had the lamb and that was amazing. Also tried O'Sheerans (spelling?) twice, and the food was pretty good. It was bar-style, nothing fancy. But we weren't looking for anything fancy. Otherwise, mostly ate at the buffet because I never knew what I wanted and knew I could pick and choose what to get there. Plus, I LOVED eating out on the back deck in the open.
Maybe I have an easier time with food selection, but every time I ate at one of the sit-down restaurants, I had a hard time deciding what I wanted. There were always at least two options that I had to pick between. It may not have been 5-star quality, but it was certainly edible and I enjoyed not having to cook. And I don't eat any kind of seafood, so that narrowed it down by several selections.