It works a treat and stops right outside Seaworld. Just be sure to arrive early at the stop as the bus sometimes turns up early too and there's a long wait ahead if you miss it! Also, I'd try and avoid the last bus of the day if possible as this is always chock full - if you aren't there early enough and the bus gets to capacity then basically, you'd be left behind!
It's a great bargain though. Not up to date with the prices, but it used to be $1 pp each way.