I use to watch this movie when I was younger, does anyone know what it is called?

All I remember it had was:
Knights and red carpet, a castle/tower, water/a ship or was it a boat, a chipmunk, a ghost.

I can't remember what all happened but that is all I know, it was an old disney movie or was it a old cartoon show/movie/was it anitmated? At the first part of the movie, there were 2 people/animals and 1 of them was dressed as a ghost and they were going tricking and treating.
If anyone can help me name the movie and year date, thanks for your help.
I thought at first it was called buster or ghost buster but I might be wrong

I may be way off base but all I can think of is bedknobs and broomsticks it has a lot of what your talking about but some not.. sorry if this isn't what you were looking for