We sat in the blazing sun till six, when thirteen-year-old Greyson Chance performed (and the sun thankfully dropped behind the trees), and then Ms. Cosgrove came on stage from seven to eight. She was pretty good (I know some of her songs from stuff the daughter has loaded onto the iPod, so much of it was pretty familiar to me) with an enthusiastic, bouncy stage presence and a solid voice. The younger boy enjoyed the novelty of it all; the older boy read books the whole time. Both girls seemed to have fun.
After that, we walked across the park (with whining from Mom, but none from the kids:-) and watched the closing fireworks at 9:30, and then drove home. The traffic wasn't as bad as I feared, and we were home by 10:30 or so-- to the immense joy and relief of the dogs, who wondered where on earth we were all afternoon!