Thanks for this info. I'll continue to monitor this thread. In one of my Facebook travel groups, I am also getting mixed results re: last minute deal availability.
Selfishly, I was monitoring online deals for the 22-23 season, but the airfare associated with the deals, either cash or miles, was pricey to book at last minute. I am thinking about going to Ushuaia in 23-24, finding a deal, or if not, intra South American flights are readily available and exploring some of Chile or Argentina.
If I find anything of significance, I'll post as I believe in giving back.