If you take 417 (which is what I recommend for Pop):
Take 417 to the Osceola Parkway (not 535). Make a right onto Osceola Parkway, heading towards Disney.
You'll see the Gaylord Palms at a major intersection. Make a LEFT, and head down that road. (If you were to go straight, you'd get to Disney) About half a mile down, just under the bridge, there will be a Publix on the left.
To get back to Pop, head back to the Gaylord Palms, and make a LEFT back onto Osceola Parkway. You'll see Pop on the right as you pass under the arches. Just make a right at the lights, and another right at the next lights to get into Pop.