On the surface? It features both Chevy Chase and Beverly D'Angelo - as a fan of the originals, that's awesome to see. And in one of the main roles, there's Christina Applegate - having practically grown up on Married With Children, I could not say no to this. Even Michael Peña makes an appearance, another actor I really like.
But then the movie actually starts, and... Something's definitely missing. The humour feels rather forced for the most part, and the chemistry isn't there that much either. Not only that, but so many elements that are just way too crude and explicit for a "family movie" - not that it's actually meant to be one of course, but still... I mean, the originals had a few risque moments too, however I don't think the four together had as much explicit material as this one. (And though Debbie Do-Anything is perfect to be considered Kelly's college persona, if she'd ever gone to college, it's just a little too much here.)
Overall it drags on for what feels like too long, because it just lacks the charm and wit. There are a few laughs to be had, but they're too few to make up for the shortcomings.