Oho, so funny!
These little thieves are still there (last photo).
Great. They know were the "things" are. Trying to open the rucksack!
I have been there 2 times.
Speaking Portuguese (The Brazilian Portuguese is little different from the Portuguese spoken in Portugal) it was really a nice trip.
It's good if you speak Spanish or Portuguese in South America.
May be today there are more people speaking English, but speaking a "Latin" language helps really a lot.
As you did, I would recommend Argentina and Chile as well : Perito Moreno, Atacama....