We were on Harmony 6/23. Coastal Kitchen was one of the highlights for us. Breakfast and dinner every day. We like Park Cafe too much to pass up that for lunch. Overall Coastal Kitchen was great. There were a couple nights where they couldn't accommodate our request for a particular waiter because he was already full, but got us in with our second choice one of those nights. The other night we asked for the second choice and someone else showed up. We rolled along with it and the waitress was fine.
Food was well above the standard in the MDR, service overall was fantastic. No "disasters" there for us (other than managing our 3 year old at dinner!)