text:  WFMD News. A proposed ordinance to regulate agritourism businesses in Frederick County brought some negative comments from some farmers who attended the council's meeting Tuesday night. One part of this bill would set limits for when amplified music could be played on a farm from 1 p.m. until 8 p.m. and no more than four hours per day. Tom Bars runs Milkhouse Brewery, which is part of the Stillpoint Farm in Mount Airy. He noted that anyone operating an agritourism business would need to get a zoning certificate.