Granted, I have not been a CM since the Fantasyland Expansion (I'm assuming that is what FLE means), but the back of Fantasyland used to have access to the tunnels. Not in the old TT area, but in the old Grotto area there was and there still should be some by Pooh and the old Snow White ride. The utilidors do not encompass the entire park; the ones at Epcot even less. And yes, the description of concrete hallways is accurate. Some parts are smellier than others and they play radio stations in the halls, not Disney music. There were times when commuting through the park would be more pleasant and times when using the tunnels was a better choice.