What's open and what's closed this Victoria Day long weekend

The Canadian way to canonically spend your May long weekend (which celebrates the birthday of Queen Victoria, but unofficially is more about kicking off the summer) is to get out of the city.
For anyone spending time in town, here’s a rundown of what’s open and what’s closed in Ottawa this weekend.
Retail, food, and alcohol
The Rideau Centre will stick to its regular hours on Saturday and Sunday (9:30 a.m. – 9 p.m. and 11 a.m. – 6 p.m., respectively), but