If you go to the Sportsman Show at the Expo Center, go early. Parking and traffic is awful. I arrived at 2pm and the parking lot was full. From that point it took over an hour to turn around and park at Portland Meadows. A good bet would be to by-pass the parking at the Expo Center and go directly to Portland Meadows and catch the shuttles to the show. Take the back roads to Portland meadows, Columbia Blvd. to Vancouver Ave. That way you can miss all the traffic in Delta Park.