Practicalities

Aerolineas Argentinas
Just spoke to my half-Uruguayan friend, and she said we should check up on possible schedule changes with this specific airline. She just came back from Uruguay and Argentina and their schedule was changed 4 times.

Internet
Getting wifi on wifi capable phones was pretty easy for her (i assume in larger cities) as many networks were open.

Food
My other friend who came back from Chile and Brazil said that we should only drink bottled water and be careful with maybe meet (sausages) bought on a street. Otherwise, she ate cakes and fruits carelessly and had no problem.

Weather
It can get very warm in Puerto Madryn, well above thirty in cases as it almost never rains there. So before packing we really should check all the weather at the places we go to =)
Down south, rainwear could be a good idea, I think.