From a post on OrlandoOnTheCheap.com
For Florida residents age 5 and younger, SeaWorld & Busch Gardens are offering free entry.
The offer is available by registering online. After registering, a Preschool Pass is available at the attractions’ ticket windows with a printed confirmation and a certified copy of the child’s birth certificate.
The offer is exclusively for Florida residents ages 5 and younger and is valid for unlimited admission – with no blackout dates – to December 31 at SeaWorld Orlando and Busch Gardens Tampa Bay.