Guillermo sent an email Sunday morning:

This will be a short one and I will try to write you more later. We are back in Puerto Madryn and came here to confirm our flight for tomorrow to El Calafate, but I have called several times and they don't answer, so my guess is that they don't work on Sundays. I guess we just have to show up tomorrow at the airport and see what happens. Hopefully, we won't have a problem. They told me to confirm the day before, but if they don't answer, there isn't much that I can do.
Before leaving Puerto Pirámide, I went to the same ATM and had to go through the same thing (a little at a time) to get more money, but it worked. Hopefully that will work in other places too, so yes, you need to cancel that Western Union thing and hopefully get all of the money back.
I think we may drive down to Trelew in a bit, provided that we have enough kilometers left on the car, and then come back here to spend the night.

And Sunday evening he called me. I was so happy to hear from him! He sounded like he was in good spirits, and said that he and Fernando had tried several different internet cafes to write from that evening, but they were all packed with people. So, neither of them got to send an email tonight, but at least I got a phone call. Guillermo said they saw a very interesting armadillo on Peninsula Valdez and that it was a little clueless, actually getting within a foot of each of them until scurrying in another direction.
He also said they were excited to see a Rhea, which they were starting to think they weren't going to see. On this website, there's a picture of a Rhea: rhea picture

It was very nice to be able to talk to Guillermo, but we didn't get to say goodbye to each other properly because the line went dead. He tried calling 3 more times, but each time we were again cut off.

Nothing new here at home.