We attended this event yesterday. We came late afternoon around 3 and it was not overly busy at this time but there was a nice turn out. Some booths were busier than others, but you did not have too long of a wait.
Nice ambiance overall since it is in the South Park area. There is an area for kids--though I would not necessarily bring my kids to this event. Better off attending a free festival in town and saving $.
Now for the wine..As others have echoed the wines are very sweet. There were some dry wines that were ok, but overall they were all very sweet. I'm not even like a wine expert or anything but I can tell quality is so-so (not bad but not great). I have found better inexpensive wines from Harris Teeter and 201 Central.
While I am glad I attended this festival because I was always curious about it, I don't think we will go again due to wine quality. I liked supporting local and regional businesses though so glad we attended.