I just got off an Atlas Ocean Voyages Antarctic sailing. It was amazing. Had the Drake Lake both ways and warm sunny weather most of the days down on the continent. Saw more orcas on this sailing than they saw the entire 2024-5 season! I sell a lot of Atlas and I can attest that they will wheel and deal for those last cabins starting about a month out. I had close to 20 people on this sailing with the last solo passenger booking just a week before the cruise. I called to get him a price and they pretty much asked me "how much do you think he's willing to pay?". I got him a solo balcony for about $10,000 for an 11 nighter with the pre hotel and charter flights. It's found money for them. The smaller lines like Atlas, Swan Hellenic, Aurora, Albatross, etc will be more likely to wheel and deal, but I'm sure some local agents in USH will have some additional inventory to sell. My Atlas rep said they work with USH agents to sell last minute cabins to those wandering around Patagonia.