At Walnut Valley Festival (Winfield, KS,USA) there is NO alcohol allowed on the festival grounds proper, which is the main Midway area of the Fairgrounds. There is not supposed to be any in the campgrounds, but they can't keep it out, come in in RV's, coolers, etc. Years ago when the festival first started, there were no rules about alcohol, and there were MANY problems. The campground is not actively policed, and now there are no problems at all, because if you get obnoxious drunk, they just kick you out.