Betterlatethannever is correct that the buses don't always let you off at the park at the bus stop for the resort you are coming from. The bus stop for Pop is #18 at the Magic Kingdom, #12 at Animal Kingdom, #4 at Blizzard Beach, #8 at Downtown Disney and Typhoon Lagoon, #12 at Epcot and #10 at MGM. As a reminder before boarding any bus at Disney make sure the marquee on the bus indicates the resort or park you are wishing to go to. If you are unsure where the bus is going ask the driver before boarding.