Hi Andy,
This is off Allears website....you might want to call the Dolphin to confirm.
Directions from Orlando International Airport (MCO) to the Swan and Dolphin Resorts:
Follow the signs for the South Exit from the airport to pick up SR417 South (also called the Central Florida GreeneWay) toward Disney World. Once on SR417, you'll have 2 toll plazas for $1 each. After the 2nd toll, take exit 6 (SR 536/International Drive). Go straight through two sets of traffic lights (first intersection will be International Drive; second will be SR535) which will put you on SR536. Continue straight on this road and go straight through the next set of lights. You will pass the Marriott Orlando World Center on the right and the Holiday Inn Family Suites on the left, then I-4.
Just after I-4, you'll pass under the WDW welcome arch. After passing under the WDW welcome arch, follow the signs for MGM/Epcot Resort area -- it will be the 2nd exit after the arch. This will put you on Buena Vista Drive. Stay in the middle lane. Follow Buena Vista Drive straight. You will pass Caribbean Beach Resort on your left and the Boardwalk Resort on your right. Get over to the right hand lane as you pass the Boardwalk. Turn right at the next set of lights (Epcot Resorts Boulevard). The Swan will be the first street on the right. The Dolphin will be down a little further on the right.
NOTE: Epcot Resorts Boulevard is a horseshoe shaped street that intersects with Buena Vista Drive in two places. The above directions send you to the second occurrence of the street. If you mistakingly turn onto the first occurrence, you can continue driving down Epcot Resorts Boulevard that way and the Dolphin will be on your left about a mile down and the Swan will be a little further than that also on your left.