We went to Busch Gardens twice last week. It was a fairly easy drive from Orlando, just over an hour. We could have taken the free bus from Sea World, but it wouldn't have arrived in time for opening. Also, we weren't sure we would want to stay until closing. Plus, after the first visit my wife and daughter went to the Bon Jovi concert in Tampa, and after the second visit my wife and I went to the Tampa Bay Lightning hockey game. But the bus sounds like a great deal under other circumstances.
Jim