Bus from any park should take you to Fort Wilderness (or boat from MK), then you have to get on the bus with-in FW ...I hope someone can post which bus stop at you get off...we were lucky someone one on the bus told us where to get off. By that time it was dark and we still didnt know where to go...we just walked toward the voices. My kids really liked the campfire & movie.
Just FYI...Next time I plan on bringing a TAXI services phone....It took us over 2 hours to get back to the poly...we left at 10:00pm, waited for the FW bus (let one go flying by before realizing you have to wave the guy down!)...Then we got off at the ?settlement and tried to wait for a bus back to the MK..after none came we asked the bus driver who said we have to take a bus to WL, get off and wait for bus to MK-or take the boat....We trekked down to the boat dock and docked at the MK at 11:15 as swarms of people came out. We herded like cattle up to the monorail (DS 7 NOW has to go to the bathroom!). After "waiting for clearance" on the rail -every few feet- we made it back to the poly at midnight.