If you get onto Sherberth Road the same way you would travel to the parks, and make the turn toward Animal Kingdom, you're on Osceola Parkway. Continue on Osceola all the way past Wide World of Sports and off property. Stay going straight, Gaylord Palms will be on your right. Just a little after that intersection you will see a well-marked entrance to 417 also indicating the airport. Then it's just the tolls on 417 and the exit to the airport, again well marked.