I'd expect good crowds at Thanksgiving: Cars parked along the road at the second pullout at Thanksgiving 2007. But if you just expect crowds and go into it knowing you should have a plan for alternate routes (and start early to climb in the cooler temps) it's still fun. It's not super cheap but it's tasty and they have good beer at BJs
at West Charleston and I-215ish. Based on the name of this route
other climbers enjoy BJs too. The Jerry Handren book
is definitely the best guide for the area.