Personally, I'd save it for when they're older. Took my DD when she was 3, and she was quite frightened of the characters, and my DS1.5 positively shrieked(and he's my easy-going child!). Of course, they were too young to remember any of it, although my DS, who's now 15, carried a fear of masks up into his preteen years. So, if there's any question about how they'll handle it, I'd say to wait. Save the money for when they're 5 or 6.