Well, I don't have any kids but my attitude would've been "No feckin' way hosay!!!" I'd have made it clear that out of the 30-odd kids that wanted to come surely one of them must have parents that are "cooler" than me!
Something's always bound to get wrecked when that many teenagers descend on your house! And failing that, it usually turns out 2 or more of the little fecks have got it on in your bed! :!: