Wilderness Lodge, Lobby area, same place you'd drop off your car if you were to Valet Park
All Star Music, right up around the lobby area, near where you enter the building.
When we stayed at SSR we had them pick us up at our building, so neither of the 2 locations you list. But if you want one of those, then pick that spot. Best plan is to just go to where you want to get picked up and set your pin exactly where you are and request the car. Actually, that's the best plan for most picks ups at Resorts. Doesn't really work for parks as they have specific pick up points but resorts (other than CSR) don't. If a car can drive there, a Uber/Lyft can pick you up there.