After debating whether it would be worthwhile to load up both kids and go to the fair this summer, we decided to go for it, and I'm so glad we did. (We had considered just having Joe go with Ava, while I stayed home with Charlie).
The unseasonably cool weather helped - it was 72 degrees at 2:00 in the afternoon - perfect for being outside. We stayed a couple of hours, and got to do a little bit of everything: went on a few rides (Ava LOVED the giant slide, which I had to go on with her - I, being a little uneasy with heights and speed, did not particularly enjoy it, but I did it a second time anyway); ate some fair food, watched the pig races, checked out the animals, and even played a little Bingo! Joe carried Charlie in the Baby Bjorn, and he slept the whole time.
Ava, watching the K-9 demonstration

Charlie, chilling with Dad