Hi Dave !
There was only 3 or 4 (or maybe 5) other sites occupied this week-end...
1 big motor home (maybe the same as last year ?) in front of WC, a small one that arrived Saturday + 2 or 3 sites with regular tents and some loud music

that stopped before we went to have a chat with them...

Still, they had no clue how their car alarm worked and it would start beeping at any day or night time !
Otherwise we had a very nice weekend even if the nights were a bit cold.
Weather was particularly nice Sunday afternoon so we stayed on the water quite late... and arrived and unpacked late in Montreal.
Up the river we only saw 2 single canoers that were day-trippers in the park ...
Pic 18 with canoer was taken at Copperas pond/stream junction about half a mile from Floodwood.
Not much snow left on the ground at FCP but more ice on the pounds than last year.
I am not sure what you mean by Fish Creek Peak but I have a video of the road starting at #36 and around FCP to the road at the other end while we were searching for not-too-wet wood around the lake.
I could make a screen capture of a specific area if you give me some details...
We also tried to go to Rollins, but I backed-up just before the entrance since I only had my summer tires on (same story as last year) and there was nobody around to help if I got stuck... I also have that part on video.
We might go back in a few weeks (before the high season) since the wild-camping spot at Copperas junction (pic #18) is really nice and would be a good starting point to try to reach Rollins upstream.
You should try at least one early visit to FCP - I am sure it's totally different than in the regular season but it's probably not for everyone.
We found Rollins to crowded in May last year

Give it a try after Fairhaven Beach ! But I warn you, Canada goose are still all over the place !
Mario