I think DP saw it when it came out. I never have. We have a Playmobil castle like that; got some pictures of the gerbils in it once ;-).
It’s very funny. Your kids will all love it, except for the one who is still in the dark.
If not for the fact that it came out earlier, one might think it is a take-off on the Harry Potter movies. The central character, Willow, has two roles in the Harry Potter movie.
Addendum: There is considerable violence in the movie, including sword-fighting. It amounts to a war between good and evil.
You may wish to consider the effect of that on certain byos.