Glad I thought to check inventory this afternoon, albeit for a flight I don't care that much about (MCO-IAD). I'd switched back and forth between the 4 and 7pm departures, and kept clearing using PP. Switched back to the 7pm this morning, and it was PN0 PZ0, so I left it with CPU. I was 2nd on the list at the time with 4 seats.

Around 4pm, I figured I would check again. Still 2nd, still 4 seats, but it was now PN/PZ3. So I applied PP (knowing I'll not use them all anyway this year), and cleared.

I just checked again a few minutes ago, and F is checked in full, with the person who was #1 ahead of me still #1 on the list and not cleared. Guess folks bought up.

I really don't care that much about a 2-2.5 hour flight, but sitting in F beats sitting in Y 95% of the time.