Close to Seattle, easy freeway to drive
You'll get bored quickly, lots of teenagers, rain/ice
I've been night snowboarding here a few times this season as a chaperone on a school bus, and I can say that although the kids have fun, I get bored quickly because the snow is terrible (either raining or it's icy) and there are only so many runs to come down, and I only like a couple. The runs are rather short, too. If you are used to snowboarding at Stevens Pass, for example, this place will be disappointing for you. You'll be surrounded by teenagers from the ski buses if you head up at night on weekdays or all day on the weekends. It's worth coming to just a couple times, but if you plan on going weekly, I imagine you'll regret buying a seasons pass.