Family-friendly and free to all, flick a fly and fish for fun with the Walla Walla Fly Fishers club! Walla Walla, Wash.— On Saturday, June 14, 10 a.m. to 3 p.m., friends of Waterbrook invite all to its sixth annual Fly Fishing Day, a casual, relaxed day on the Waterbrook pond where casters of all …