Visited here for the first time this year. My daughter and I really enjoyed the variety of vendors that were selling their products.
The only issue I had with my visit was the free parking. We arrived at noon (opening time was 11 a.m.) It was nearly impossible to find a spot! After circling around several times and not wanting to chance parking in an unknown lot and having our car towed, I opted to use the valet parking. For $5 it was well worth it to me. Had we arrived earlier the parking may have been better. I will try to remember this for next time.
All in all, I would recommend visiting here. Make sure to walk around when you are done and look up at the Steel Stacks!