If you don't want to complicate yourself just take International Drive south and you'll hit Sea World.International Drive can have bad traffic at times,to avoid it you can take Universal Blvd south to Pointe Plaza ave. and meet up with I-Drive again by the Convention center which is OK as the worst traffic on I-drive is usually around Sand lake rd.You can also stay on Universal Blvd past the Beachline expwy where it becomes Orangewood and turn right on the Central Florida pkwy. which will lead you straight to Sea World.The Turkey lake option is also good as Turkey lake has light traffic.