I swear.. there is a real vineyard in central Illinois. It's not too far.. like a five minute car drive from Prospect. They do process the wine here.. but they grow the grapes further south.
The wines are decent.. they have something for everybody there. The best part is that their wine tasting is FREE! In the summer they have bands (jazz, etc) that come on the weekend you can enjoy with a glass of wine or beer. There is a cover though.. about $5/person. I'm not too fond of the food they serve there. They sell candy bread, cheese, and popcorn. Their hot food includes microwave pizza they sell for $8/9" pizza. Yucko.
But you can sit on the porch (and not in front of the band) and not pay cover. That's what I do. :) It's just the same.. and still a good time.