Unless you do something REALLY well known (like a cat from cats, or little orphan annie -- and even that's stretching it sometimes!.... or the phantom) be prepared that people won't know who you are.
Last year I went as Velma to one of the Halloween parties I went to (see pictures in my fan photos section). Some of the people thought I was a Robert Palmer backup dancer, while others totally got it and knew I was Velma from Chicago.
"You're every gay man's wet dream!" ~ MA
If in Heaven you don't excel, you can always party down in hell...