I saw that Metorfire requested a Disney World fic and that reminded me of a Disney World fic where Sam runs off to Disney World with a child (I might be completly wrong about that).  I don't remember anything about the story except that Dean and other people are looking for Sam by going to places Sam would go.  They realized though that what they needed to do was to look for a place the child would like to go to.  They finally find Sam at WDW.