There is a subway on 535, the road which you would come to after passing by Downtown Disney and the Downtown Disney Resorts. Make a left on 535 and turn left by where the big Athetic Food outlet/IHOP/Chinese Buffet Restaurant are, it is in that plaza. I believe this is at the corner of the next or second intersecting road. If you see the Sheraton Safari on your right, you've gone just a bit too far.