This is a nice movie, but so sad. My son cried big heaving sobs 2 times that he watched it. His Dad cried with him the second time, so my son felt better, I think! Yes, great animation/mix
My 2.5 daughter didn't like it we stopped it because the fire scenes were scary. This is the last time I neglect to check a review before letting her watch something.
Simple animation mixed with an OK live-action story that could produce some anxiety.
I watched this with my 7 year old grandson. He had some questions about why the young child protagonist became ill (from Scarlet Fever, which was BTW, convincingly portrayed). I could tell he was anxious as to whether he could be taken ill with a potentially deadly illness and we stopped the movie and talked to him about it.
Other than that, the very simple animation was serviceable but far from Pixar standards. The story is not realistic as people (both the grandmother and the father) completely change their attitudes within the space of days/hours. While teaching a lesson that "loving is what makes us real" it actually has more complex metaphysical issues that it touches on but barely explores. (Do our dreams & fantasies affect our real life?) There is no spiritual/religious component to the movie although parents could makes analogies to spiritual themes.
Our 7 year old enjoyed it as he would a fairy tale other than for some trepidation about a boy (his age) nearly dying... both in the real world and his fantasy world. Consider this issue for younger children.
It may be a little confusing in that it kept going back and forth with reality and imagination. However, the reality scenes are with real people and the imagination ones are animated. There are 2 dramatic scenes involving fire. In both scenes someone is harmed but the viewer doesn't know that the character survives until later. I discussed with my 3 year old how only 'stuff' was burned and not anything truely alive. My child was fine with it, but some children may be disturbed by the scenes.