The language is bit formal and the kids a bit too perfect. Also considering the title, NAAMHAC is not really in the book that much. It made me remember a Sesame Street I read when a kid about Groover visiting a museum, and it actually had references to the museum. I understand that this is a self published book and that there might be legal issues, but considering that title mention, there should be more of a sense of the museum.
However, the artwork is stunning. Additionally, the story features a loving and successful family, who aren't perfect but are wonderful.
Note- apparently there is a Spanish edition that is also free.