We used Mears for our trip to Sea World. It cost $12 pp r/t. If there are more than four of you, I would book a towncar. We did that the last time. It cost $45 plus tip, r/t. I'm pretty sure both of these prices went up since I used them.
Wow, I knew about that bus a long time ago, but forgot about it! We were thinking of renting a car just to get to sea world for the day. How difficult will the bus trip be with a double stroller and 3 kids ages 5, 3 and 8months?