Is it totally off limits Fitchmo or can you just go in and dry camp just zero hosts? We do this at Little Bow PP when it's not officially open over the past 17 years. I ask because our kids (24&31) just camped this past Thurs to Sun on Lake Koocanusa in the sites at Gold Bay (dry camping with picnic table and were allowed a fire). The lady at the 1800 number I called said "Oh if they are coming this weekend it'll be free not the $14 because there's no one there yet and they haven't raked the sites". They totally enjoyed it and late Friday just one other fifth wheel came in onto these 8 sites. Water level was down substantially but that aside they had a wonderful weekend. Also there is a dump on the NE of town Fernie ?chamber of commerce that cost them $2 in the honesty box, couple days ago FWIW.
We've also seen folks stay at Canadian Tire area in Fernie, and other areas for an overnight or two as a heads up if maybe needed in a pinch.