Yes
Thanks.
So, here's the follow-up question:
I want to book MIA-BOS on 15May using 10,000 Avios in Economy, but no availability.
I could book in F using 40,000 Avios, and cancel (no penalty) even at last minute if Y becomes available.
Or, I could book in F using 22,500 AA miles, and then just forget about it (I wouldn't want to cancel, given the $150 penalty.)
What would you do?