What's open and closed during the holidays

Here’s a selection of Montreal-area services and businesses that will be available (or not) during the holidays:
Canada Post offices will close on Monday and Tuesday. Normal delivery will resume on Wednesday. Some privately-operated postal outlets might have different hours; check directly with the outlet. There will be no delivery on Jan. 1. Normal post office hours will resume on Jan. 2.Banks will be closed on Monday and Tuesday, as well as Jan. 1 and 2.
Most city offices will be closed