Warning, not the best direction giver, but
Orange Blossom Trail is the exit for Albertson's. That is where we stop. It is off 417 (?) coming from the airport. Get back on 417 and continue on to WDW. Once you get to the property there will be signs to the resorts, follow them and you should be okay.
The store is right off the exit. I think you turn left after the toll booth. Have change ready to pay the toll (.50?). There is a large shopping center with a Home Depot, Steak n Shake etc at that exit.
Like I said, not the best direction giver, but I think you'll be okay or maybe someone else will come along and give more specifics since I've given this a bump.