We just watched our video of the visit to Iguazu and were reminded of a couple of items which might make a one-night trip there more interesting. First, one can go on a water-level trip to the base of the falls from the Argentine side. The boats are at the bottom of the stairs from the trails on that side. (We did that but I'd forgotten since the Zodiac trip into the falls was a bit more memorable, perhaps because of the demise of my camera...). If there is a helicopter option now on the Argentine side (which there was not where we were there more then 10 years ago), that is a wonderful way to see the astonishing grandeur of the falls and the river which feeds them. It is a very expensive 10-15 minutes, but worth every peso, or whatever the currency happens to be. Cheers, Fred