totally agree with DeHe - no harm in waiting!

but... if you can get hold of a book that tells the story and read it first, that might help. of course, this is how we wound up with a kid who had watched (and LOVED) all 8 HP movies multiple times before the age of 5 - yet still gets very emotional about Miss Piggy physically and psychologically abusing Kermit.

Every Sunday it brooded and lay on the floor. Inconveniently close to the drawing-room door.