Overall, the Highland Park Farmers' Market seems like a pretty nice, low-key, family scene. I'd definitely go back, especially since I think it's important to support positive developments in my community. The farmers' market is small now, but I'd be really excited if it gained popularity and more fruit and vegetable sellers started coming. We could do our weekly fruit and veggie shopping there from local, organic sellers. That would make me really happy.
So, if you live in the Highland Park/Mt. Washington area, you should stop by the market on Tuesdays between 3 and 8. It's at Ave 57 and Marmion way, and parking was no problem (although really I should start riding my bike there).