Disney hotels do not have transportation to SeaWorld or Discovery Cove. We took a cab to Discovery Cove, but a bus to SeaWorld. You can pick up the bus at Downtown Disney (difficult to get there early - the cast member at the beach club bus stop asked a driver to bring us there) or you can pick it up at the TTC - which is easy to get to early.
Disney to Sea World/Discovery Cove (across the street from each other):
1. Cheapest Option: Take #50 LYNX bus from TTC or Downtown Disney to Sea World
Click here to link to the LYNX schedule It leaves TTC at 1 minute and 31 minutes after the hour (running every 1/2 hour from 6:31 am - 12:01 am) and leaves DTD at 19 and 49 minutes after each hour. You can return at 10# and 40# after the hour from 5:40 am to 11:10 pm It is $2.00 each way for an adult and $1.00 for a child (young babies may be free).
2. You can arrange a Shuttle through
Mears Transportation I think it should be $19 pp round trip
3. You can get a cab, Mears' fare estimator indicates it is about 10 miles from Epcot to Sea World with an estimated fare of $25 each way, so if you have 3 people, the cab is cheaper than the shuttle. When we did this, it was a tiny bit less. They have big cab vans which I think cost the same as the ones that look like yellow town cars.
4. You can also schedule a towncar for $37 each way. I wouldn't though. The mears cabs are every bit as nice as a town car on the inside. The only difference is that they are yellow.
This
link should get you to a PDF of their current prices
5. You can rent a car right at Disney for about $35 pd - check out
Mousesavers for latest Coupons I considered that but I've never driven in Orlando before.