This felt a little lackluster to me. I liked the premise and the characters but I didn't find them believable as realistic children. There were some really funny and very heartfelt moments and I think it has the makings of a great story with a wonderful message about family. 

Overall, though, the dialogue in particular felt uneven and disjointed. I think it could've done with another round of edits to capture some issues with the dialogue and action as the order of events was confused later in the book.