Nah it does, it ruins all the good characterizations of the characters both from the books and the previous movies. Susan (Greg's Mom) for example instead of being a stern mom who has a sweet and fun side is left just a dick in this movie. Frank has no personality at all. The only decent character was Rodrick. There were also a lot of funny bits in the Long Haul book that weren't adapted and the ones that were weren't adapted well at all.
