The newly-tall Annie Farrell, 8, and mom Jodi Farrell head downhill in the backseat of the Cheetah Chase roller coaster at Busch Gardens Tampa Bay. COURTESY OF JODI MAILANDER FARRELL

A cast member at Disney's Animal Kingdom checks whether Jack England, 6, measures up to the 44-inch height requirement on Expedition Everest. GARTH VAUGHAN / WALT DISNEY WORLD