When I work I prefer to work like that, my standard 'work day' in that area is anywhere from 14-18 hours,* but stuff like huge set-ups like that are all about getting it done regardless of sleep, besides once you make it to double-time no one wants to stop, the money is way, way too good.
*- but I also take lots, and lots, and lots of time off, I only worked 3 shows this summer for example. And those pretty much by protest.