It’s time to fire up the mains and join fellow boaters out on the water for this annual holiday tradition as festively festooned sloops, yachts, sailboats, and more parade on Lake Union. The route begins in front of Fremont Tug Boats and loops around to finish things off at Morrison’s Fuel Dock; interested parties should register ahead on the website, and should also feel good about their participation as the event helps support Seattle Children’s Hospital through a Toy Drive.