Bosses in my center tried that this year. My green light of death went on at 3p, "You need to do these 4 pickups." I still had 30 stops, including a 35 piece delivery that I had to break trace to get rid of. So, I took my break, delivered the 35 piece stop and did the pickups. They sent another driver to take 10 stops off (turned out the other driver was 5 miles closer to the pickups, could have broke trace, picked them up, finished delivering and we would have both been done 30 minutes earlier.) Still delivered my list 10 stops, dodging Halloweeners.
My original plan was to pound off my deliveries, deliver the resi bulk stop and then take my break. I would have gotten all my work done in the daylight and been taking break by about 1700. Adding the pickups added over an hour to my day, plus someone else had to take 10 stops from me.
Gah.