Putting in my 2 cents....My DH and I were at WDW in Nov. As 2 adults with no children, I have to tell you we had a terrible time with screaming children at A LOT of restaurants we went to. Before anyone gets upset, remember I am only telling you how our vacation went. We were seated every meal near one or more tables of kids who spent much of their (and our) mealtime NOT sitting quietly. I have nothing against children, honestly, but I do resent paying $100+ for meals (we were not on the meal plan)and having to hear anyone of any age screaming. We like to eat at nice restaurants, but I will limit eating at WDW next time and just go off property where it's not as crowded. I don't mind going somewhere else to find a place where I can enjoy my meal. Obviously, I expect children at WDW, it's just been a while since we had been, and the last time we went, fewer families were eating at the nicer restaurants. In contrast, we did the 4 night cruise afterwards, and we were VERY impressed with everyone's behavior. I cannot recall hearing any screaming-unless it was in fun.
We also ate at V & A's, and one ironic thing is that I thought it had always been adults only. We have eaten there many times and never encountered kids. I definitely vote for no kids there. Our meal with the wine pairing was $500, and I would have been very upset if anyone screamed during our meal. (except us when the check came)

That should be a no brainer.
I am also sorry to say while the majority of the kids I know are very well behaved, I agree with the poster who talked about the difference in behaviors when the kids are tired and hot. And in my experience, (20 years in a Trauma Center Emergency Dept., I have found that a lot of parents are not the best ones to ask how their kids will always react in all situations.
Like I said, this is only my opinion, so no flames,please.