There is no walkers path within the resort itself (except for the sidewalk along the roadway and a short walkway behind the Turtle Pond pool to South Point).
The OKW/DD path begins behind building 55 and immediately crosses the canal spillway and follows along the far side of the canal towards DI and DD (It joins the Treehouse path along the way and is lighted from there on.)
All of the other paths are actually for golf carts and are usually marked as such.
Enjoy!