This is from allearsnet.com website:
Directions from Orlando International Airport (MCO) to Disney's Port Orleans French Quarter and Port Orleans Riverside Resorts:
Follow the signs for the South Exit from the airport to pick up SR417 South (also called the Central Florida GreeneWay) towards 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 and the road becomes Epcot Center Drive. Take the 3rd exit after the arch. The sign will say Port Orleans/Old Key West. Go left at the set of lights at the end of the exit ramp. This is Bonnet Creek Parkway. Stay in the right hand lane and continue straight through the next traffic light. The entrance to Port Orleans French Quarter will be the first resort on your right after the traffic light. Port Orleans Riverside will be a little further down also on the right.
If you need a grocery stop before arriving at Port Orleans French Quarter and Port Orleans Riverside Resorts you have several options.
Option 1: Follow the above directions for leaving the airport and picking up SR417. Get off at exit 11 (South Orange Blossom Trail). NOTE: There is a 50-cent tollbooth at this exit that only accepts exact change so be prepared. Turn left at the bottom of the exit ramp. There is an Albertson's (open until 1:00 am) about 1/10 of a mile up and a Winn Dixie (open until midnight) about 4/10 of a mile up. If you turn right at the bottom of the exit ramp, there is a SuperTarget (open until 9:00pm Sundays and 11:00 pm every other day) a short ways down.
When finished shopping, get back on SR417 South and continue using the directions above.
Option 2: Follow the above directions for leaving the airport and picking up SR417. Get off at exit 6 (International Drive). Turn right at first set of lights onto International Drive. About 3-4 miles on the left you will see the Premium Outlet Mall. Take a left at the lights at the entrance. Publix is right there on the right. When done shopping, go back out to International Drive and take a right. Follow it to the end and turn right which will put you on 536. Continue with the directions above