I remember many years ago when my sister and I went to
MNSSHP - there was a girl who was...it wasn't really Zombie Cinderella as zombies weren't that big, but definitely like a Cinderella ghost. The blue dress, the hairstyle...and a nice bloody line across her neck along with "death" make-up. She and her boyfriend were quietly pulled aside as they entered (I forget what he was...probably Dead Charming or something) and apparently told that they could either wash the make-up off or leave as when we saw them later the make-up and bloody line across the neck were gone.
So if the cast/crew members feel something is over the top (or I guess in theory if enough people complain to them), they can and will ask you to change it.