try this:
http://www.rvparkreviews.com/regions/texas/johnson-city/roadrunner-rv-park
Went up to Fredericksburg one weekend (hoping to get some of their peaches but couldn't find any being sold) and enjoyed the wineries but it wasn't what I expected actually for wineries. Seems they are all local (roadside) places, with no actual tours, which sold and let you sample wines for a price. I think the one that really caught our attention was a place called "Fat Ass". Named after their donkey, lol. But do take the drive through Johnson City and visit the ranch in your car (It's no walking tour for sure).