I did attend this open house, which filled three floors of the center with about 30 farmers and a few other vendors, and pretty much focused on selling CSAs, which was a little disappointing for me. I had hoped to learn about Wisconsin farm stands, tours and farmers' markets, and even asking the farmers didn't get me much info.
I didn't expect to see fresh produce in mid-March, and there wasn't any, but there also wasn't much to let you distinguish one farmer's CSA offerings from another's, other than the info about drop off locations and prices. I'm not in the market for a CSA -- our life is too haphazard for that -- but if I were I wouldn't have been able to make a decision based solely on this event.
A few non-CSA food vendors were there, such as some cheesemakers and a sorghum mill, but many of these were rather vague about where to find their products. Bolsano Meats had some samples of their salami; this was their totally unseasoned variety, which really gave me an appreciation that the art of salami is in the spicing. (I also recently had some of Romanian Kosher Sausage Co.'s salami, which although a completely different style, was also bland. I really miss Best's Kosher.)