Not in Walworth that I'm aware of. Sonoma Cellars in Delavan is probably the best store in the area. Bruno's in Lake Geneva is ok.
After getting your WI stuff, you might head to Armenetti's in Woodstock, south of the border. Much Larger stock than Bruno's and Sonoma and a quality selection of singles, just no WI stuff. About 20-25 minutes from Walworth.