Usually, when you know the movie is put out by Billy Graham, no one is going to be converting to Zoroastrianism by the end of the movie. The subplot is usually the same in every movie: Christian befriends non-Christian, non-Christian (and audience) hears the plan for salvation, and non-Christian usually becomes a Christian by the end. There's little suprise in that part.
This movie reminded me a lot of the old "Walt Disney Presents" movies on Sunday night TV. Family-friendly, geniunely funny in some places, a little corny in others, and usually had some pro-social message in the end - be nice to old people, don't shoot deer, listen to Julie Andrews sing and you'll be rewarded by dancing on the celing....whatever. So, I guess you can call old Disney movies "propaganda disgusied as a movie," or whatever the bitter guy said a few posts back.
As a light comedy, it works. The "Bad guys" are silly, the chase scenes are fun, and there are a few running gags that pay off towards the middle and end. Besides any "Christian" comedy that dares to take a swipe at the Partridge Family can't be that bad, can it? The parts that are shaky, as it sometimes is with WWP movies, the "Serious" moments between the granddaughter and grandfather are slow at times, and the scenes at the end are cliched. But, like I said, it's like a Sunday night Disney movie....You know what you're getting yourself into.