I just returned from WDW with a 7 month old baby. We got a discounted price on the late Hoop dee doo Review show. Before we arrived we were really regretting taking the cheap price for the 9:30/10:00 show since our son's bedtime is usually 7:30 or 8:00. He cried on the way to the show (tired of the car seat), and hardly smiled while waiting outside. My wife and I were convinced that we would get about 2 minuted into the show and then have to start trading off holding him at the back of Pioneer Hall or even outside. It just didn't look good.
But once we got him inside, it was the strangest thing. He started by really taking to the metal dishes (cool on his teething gums I think) and perking up. And when the show started with the loud noises, singing and shouting people, applause etc. little Hayden got about as excited as I've ever seen him. As the performers started the loud singing and dancing (we were right up front) you could see the expression changing on his face into what I thought was going to be a frown than a scared cry, but after a second of hesitation it was a wide eyed beaming smile, followed by vigorous arm flapping. Then laughter. For me it was better than the show itself.
Now I can't say that this would be typical for all children that young, but we made it through the whole dinner and show (until about 11:30 PM I think) without one complaint or cry and a whole lot of smiles. What a relief.
Darren