Yes they should have the Harry Potter show on the castle (and the Harry Potter area in IOA). With a child so young though I would suggest watching it on
YouTube to make sure the atmosphere won’t be too scary.
It is family friendly but for ages 7 and under its best to see it for yourself and judge if you think the atmosphere will be too intense as it will include “the struggle between good/evil magic” with masked caped (death eaters) figures walking around.