We hit up Iguazú as well, flew on one of the budget airlines in Argentina, and the falls were a bit over capacity so you couldn't go the entire distance on the catwalks, but most of it was open.

With the blue dollar rate, it was awesome, exchange some USD for pesos on Calle florida and the entire country was on sale. Paid $150 for a $500/night room. Not sure how things are going now that Milei has been running things for about a year, but should still be a good value.