Wheeler Peak Campground (Great Basin NP)

Hey All!

I was wondering if anyone here has camped at Wheeler Peak Campground at Great Basin NP? I really want to camp at high elevation in mid-september (last weekend before it officially closes), but I am worried that the reservation could get cancelled due to weather and I would be stuck with nowhere to stay for the night. Does anyone have any insight on the risks with this or should I book two reservations (one down in upper lehman) and pay the $10 cancellation fee later on to be safe?

Thanks!