The Last Splash of Summer: Labor Day Weekend at Jellystone Park™ Mark Twain Lake
Jellystone Park™ Mark Twain Lake celebrates Labor Day weekend Sept 3-7, 2026 with ‘Paint the Park Red, White & Blue’ — a parade, site-decorating contest, fishing derby, and the final weekend of the season to enjoy The Water Zone waterpark near Monroe City and Hannibal, MO.