On the SEA WORLD website you can purchase etickets-to print from your computer- at discount of 10% off, PLUS you get the 2nd day free ! When you enter the park on day 1, you can get the 2nd day ticket with ID and printed eticket for use within the next seven days-FREE!
http://www.seaworld.com/seaworld/fla/index.html
http://www.seaworld.com/seaworld/fla/index.html