Like most sequels, this one's a let-down, more of an extended sitcom for kids than a popcorn movie on the big screen.
The fun & laughs (which never raised as much as a giggle in a theatre crammed with kids of peer age) are the product of a lame script from Gabe Sachs, Jeff Judah, & Jeff Kinney and equally feeble direction from Davi Bowers, who sets his sights a bit lower than those of his target audience. Being caught in the women's john in an old folks' home is a sample of the hilarious situations invented.
There is the amusing idea of Kinney's stick figures being used to segue from scene to scene which, along with the cute little animations found during the final credits, make up the only redeeming moments during the entire 96-minutes. (Grade: C-)