We'll visit two breweries in Frederick County: first, Milkhouse Brewery at Stillpoint Farm (http://www.milkhousebrewery.com), then Red Shedman Farm Brewery (http://www.redshedman.com), located within 4 miles of each other. Red Shedman will also have live entertainment that evening, as might Milkhouse. If you've never been to one, the other, or both of these farm breweries, you won't be disappointed. Milkhouse's Goldie's Best Bitter is one of the finest examples of a British best bitter on this side of the pond.
Carpools can be arranged. I've found a good meeting spot prior to consolidating rides is the DFH parking lot in Gaithersburg. I can take three, possibly four.
See you there!