MOSES LAKE Following the tradition that any gathering of cowboys and cowgirls starts with a good breakfast, the annual Cowboy Breakfast is scheduled for 7-10 a.m. Friday in Sinkiuse Square. The breakfast is the traditional kickoff to the Grant County Fair and Moses Lake Roundup; the fair opens its gates Aug. 15, the annual demolition derby is Aug. 15-16 and the rodeo is Aug. 17-19.