Disclaimer: I have yet to do a big wall climb, but I've done a fair few multi-pitch single day routes, and I know people who have done big wall climbs. Typical

Disclaimer: I have yet to do a big wall climb, but I've done a fair few multi-pitch single day routes, and I know people who have done big wall climbs. Typically it's assumed that "big wall" means you spend at least one night sleeping on the wall, and therefore the logistics change, as you rightly wondered. You have to have extra gear to set anchors for your port-a-ledge (for sleeping), and usually extra ropes for your haul-bag (full of gear such as port-a-ledges, food, water, etc). The haul-bag is necessary because you will very quickly tire if you had to carry everything needed for the entire trip while climbing. Once you get to a safe position between pitches, you can haul the haul bag up. For waste management, a typical solution is a 3-4ft, 4in diameter PVC tube capped at one end and modified to be able to be clipped into an anchor, and you pack out everything, for the same reason they require you to pack out everything on the Whitney trail: it's just rude to dump that stuff on the route, and there are so many people there that it would turn into the equivalent of a vertical Victorian street (ie, covered in feces). I've not followed this particular ascent very closely, but I assume it went along the same lines, just with more gear and a bigger support network (much like sherpas for Himalayan mountaineering or marathon support crews).