We just went last week with our almost three year old. He LOVED it! We were right near the stage, and there was plenty to keep him busy. The girls even gave him a little attention.
He did get a little antsy near the end, and I was able to take him over to the bathroom, and then I stood in the back, out of the way for a few minutes.
Like another poster said, if they can sit for a meal, you should have NO problems. We're going to do it again next trip!