Six Flags Great America has launched a new children's pass just as it kicks off the busy summer season in the popular amusement park. The new Free Pre-K Pass (Free Pre-School Pass) allows children between 3 and 5 years of age free entry throughout the summer season of 2026, according to a statement announcing the news. According to the statement, this limited-duration pass can be used in 22 parks across the country, including Cedar Point, Great …