When everything changes on Monday or Tuesday, try to hold your tongue and reserve your criticism until it's clear that you're speaking for a majority. It will be hard to restrain yourself, but worth it in the long run. It could be that you're one of the only people able to work through the disruptions midweek, but don't about holding the place together; other folks can't help it at the moment. You'll get the credit on Friday when business as usual starts to return to the workplace. The weekend will be relaxing, and even rejuvenating if you let yourself go.