Yeah, as busy as Saban has made football camps since he's been here, there is probably at least 5,000 kids, probably closer to 10k, that trample those fields for several weeks during the summer. Which requires new turf every year...lol.
I know back when I was still coaching, I helped at all the Saban camps a few summer's in a row. And there were at least a thousand at each skills camp, and several hundred, pushing 1k, at just the specialty camps like OL/DL.