Yes. You turn left at the end of the exit ramp, which takes you under the 429. The road goes straight for a little bit, then curves slightly south. It's when you get to the curve that you go under the Disney sign, so it's not visible from the 429 itself.
Western Way dead ends at Buena Vista Drive. Buena Vista Drive goes by Blizzard Beach (to the right at the dead end), Coronado Springs Resort, Epcot Resorts, MGM, Caribbean Beach Resort and ultimately DTD (all to the left). After you pass Coronado Springs, you will see an overpass coming up. That is World Drive, the main road into the Disney resort from Highway 192. Just past the crest of the overpass, there is a traffic light so that you can turn left and get onto World Drive. World Drive will take you up to the MK toll plaza, which you go through to get to CR, Poly, GF, WL, and FW.