My turn! Just had the inevitable changes from the Argentine Airlines where they basically make connecting directly from EZE-USH infeasible.

So, here's my story:
On the way to Antarctica, my EZE-USH flight is now a 1-stop EZE-FTE-USH. Seems to be a 1-stop, I hope it's the same plane. Arrive 4:05 PM, the cruise ship departs the next afternoon so should be OK.

On the way back, things are more worrisome. This is Friday, January 6th. I now fly USH-AEP, hopefully arriving at 4:50 PM, and the EZE-ATL flight on Delta leaves at 9:15. From what I've read, I believe this change of airports is doable (I have travel insurance for what that's worth) even with checked bags if things are on time, but welcome any advice.