I didn't go on Halloween itself, but during the Halloween "season." They had very non-scary witches (men and women with no makeup, wearing black clothes and a pointy witches hat) handing out candy here and there, that's about it. Pumpkins and spiderwebs here and there. No real scares, unless I missed something.
The "Banzai! Villains" parade at TDL features all the Disney villains. That might be a little scarier for a little kid, but not by much.