On April 8th, 2023, the opening day of its 50th season, Worlds of Fun in Kansas City experienced a massive disturbance involving an estimated 100 to 150 teenagers. Large-scale fights broke out within the park, forcing security and the Clay County Sheriff’s Office to intervene and eventually clear the premises. During the chaos, a deputy was reportedly punched in the face while attempting to break up a brawl. The park was forced to close access to the involved individuals and move the crowds into the parking lot, where the altercations continued for a period. This high-profile incident led to the park implementing a new Chaperone Policy shortly thereafter, requiring all guests age 15 or younger to be accompanied by an adult who is at least 21 years old after 4:00 PM. In 2026, these policies remain a standard safety measure at many Cedar Fair and Six Flags properties to prevent similar disruptions.