You can also get a towncar service. It might be in the $40 range, round trip. When we went, we picked up the Lynx bus at TTC. It is the public transit for Orlando. It drops you right at the parking lot of SeaWorld. It's $1.25 per person, each way..exact change please. I think it runs every 1/2 hour or so. You should tell the driver when you board that you want to get off at SeaWorld entrance. Then to come back to WDW, you just cross the street, where you were dropped off and wait at the marked spot for the bus. It was quite easy.