We have used room service rarely over the years. Our November cruise on Constellation we ordered breakfast twice. We were in a corner FV. They didn't call to say that they were on the way. When they arrived they knocked on the outer door and we didn't hear the knock. We got a call telling us that no one answered. By the time they sent the food again everything was cold. Second time, to be safe, we only ordered pastries, cereal and coffee. The server didn't bring any coffee cups, which we didn't notice until after he had left. After we called it took about twenty minutes for them to be delivered.