We were in a JS on Harmony the first week of March. As soon as I got on the ship I went to the MDR, who then called the CK and made dinner reservations for us for the first two nights. They said they could only reserve two days and not the entire week at once. But after the first night we canceled our second night reservation and didn't go back. Not because the food was terrible or the service was bad. Infact, the food was fantastic, and the service from our server was awesome. Our filet mignon was sooo good.
It was just a "bit" too fancy for our three boys, 6, 9, 11. The kids menu is even fancy. :D And constantly worried about keeping our kids on their best behavior was stressful. It's funny, because on our cruise the year before on Oasis. We felt stressed out keeping the kids inline at dinner in the MDR. But after going from the CK to the MDR on Harmony, we weren't as stressed about eating in the MDR. Ha. Don't get me wrong, our kids aren't crazy. I just don't want to bother anyone around us if they get rowdy as three boys can do.
So now, for our next cruise. We booked on Symphony without the kids. Just adults, and I look forward to eating in the CK again.