Last year, I was blown away by the greatness of the pierogies at the stand that St Michael's runs. It'll be easy to find, since it'll be the one with the crazy long line. They also had awesomely good apple fritters.
It might not even rain and there might be some shining orb thing in the sky. Imagine that.
If anyone does go, would love to hear feedback. http://www.ukrainianfestival.net/