Ah, wish I was there. Hopefully there'll be a good turnout and
everyone will follow traffic rules and it won't degenerate into a
big law-breaking mess that will do city cycling more harm than good.
Last time I was in Regina with my bike a bunch of us (well, 3) had a Midnight Mass one random night/morning. Wish I had a camera - silently cruising around deserted city streets, it's a side of Regina you never see. I recommend it, just make sure you have proper lights and everything. And South Albert seems to become a raceway around then, so stick to the service roads.