It’s Valleyfair week in Mankato and that means lots of chances to win free tickets. Z99 is giving away 40 family 4-packs today through Friday. Sign up below. With more than 75 rides and attractions, Valleyfair is the Twin Cities’ amusement park, where your next family adventure is closer than you think! Discover a summer of fun from thrilling coasters and Planet Snoopy to the area’s premier water park and the new Delirious Ride.