Nothing in the show would be frightening.
Hmmm.....there is one thing that might be a slight problem but it depends on your child. Hopefully this will work, I put the spoiler in white, if you roll your curser over it, it should show up.
You do get sprayed with a slight bit of water at one scene. If they don't mind getting wet, it will be fine. If they don't like it, might not be happy. My 8 year old HATES it and I hadn't read about it so was not happy. The next time we did it on a tour, they just held their hands over the speaker/effect thingy in front of them when it was the water scene. Unfortunately, I can't remember when it was as there are 2 water scenes. Only 1 sprays on you.