We always go late October/early November and it's always during F&W. Never noticed huge crowds because of it. We don't go because of F&W, it just always works that way. However, if you are going for the F&W, I'll be happy to tell you that we've also never noticed big lines at the kiosks, maybe 2-3 people in line. Wow, I can't stand the word kiosk.
2012 Boardwalk with DH, DBIL, DSIL, no kids!
2010 Old Key West, same crowd :)
2008 Poly with DH, DS, DD and in-laws
2005 CBR with DH and DS
2000 POFQ with DH
1998 CSR with Mom
1997 CBR with friends
1992 DL with friends
1979 & 1985 Offsite as a child