We would ordinarily wait for the DVD for movies like this, but we're "on vacation", which means we need to fill up our days and nights with frivolity that we wouldn't ordinarily engage in.
But this was a pleasant surprise, because it really is pretty funny, and has a great supporting cast. The script is one of those that throws out jokes every half-second, so if you don't like one, just wait, another will be along shortly.
Speaking of supporting cast: Gary Cole deserves, but almost certainly won't get, an Oscar nomination for Best Supporting Actor for his portrayal of Reese Bobby, Ricky's dad. He's a shiftless bum who has embraced his shiftlessness, and just dominates the movie when he shows up. (Jane Lynch is also great as Mom.)