SeaWorld Orlando has introduced a new ticket that allows entry into the theme park for a reduced rate after 3 p.m. during its Summer Nights at SeaWorld event. Admission is $49.99 at the mid-afternoon rate through Aug. 14. Normal all-day admission is $79.99 for adults and $71.99 for ages 3-9. Summer Nights includes entertainment options not found during the day at SeaWorld, including the killer-whale show â€œShamu Rocks,â€ the comedic â€œSea Lions Tonightâ€ and a fireworks show. After 6 p.m., the new Summer Nights Central party zone opens. The park is open until 10 p.m. every night of Summer Nights.