This week is part of the Quebec construction holiday.
The good news is; that the place will be busy. It looks like they have 80~90 bike pre-registered. The food concession is sure to be operating.
The bad news is; the place will be busy. For some of these riders is seems this is their only track day of the year and they are gonzo. Last year I think I got 3 sessions on the fist day and 2 sessions on the second day. We had out lap crashes at turn 5 (brake parts fell off), turn 2 (low side) and turn one (yes, the very first corner out of the pits, high side). The first session I made it onto the track I got as far as turn 8 before we were red flagged. There was a second riders meeting at lunch (in French as well). Quite a bit of excitement if you're into that sort of thing, but a little short on actual track time.
If the gates are closed by the time you get there, temporarily camp at the side of the road outside the gate. You won't be the first to do this, and no doubt not the last. Be prepared to move in first thing in the morning. The black flies, mosquitoes, deer flies, horse flies, skunks, racoons, deer, coyotes, bears and rattle trap generators don't respect the fence, so you won't be missing anything if you're stuck outside over night.