I was unimpressed with this meal service IST-IAD. It was incredibly complex with long waits between table setup and service and between courses. While the food was fine, if not spectacular, the drinks service was abominable, because they were spending so much time and effort to get the food out, the drinks were ignored. If you wanted another glass, or to change drinks, you had to ask. Flight attendants would remove glasses without offering a refill. Without significant proactivity on the part of the passenger, it was easily possible that you would eat your main course with no glass on your table at all. Some of this may be training, but I think a lot of it is time. On other European airlines, there was a drinks service with each course, without question.