Travel Review: Brazil & Argentina, Buenos Aires, Rio de Janeiro, Iguazu Falls

I would ask for a hotel on the Brazilian side of Iguazu so we didn't have to go straight from the airport to the boat trip on Brazilian side & have to change clothes in the visitor's center restrooms + would take spread out tours on the Argentinian side to avoid the exhaustion from walking so far so fast at our age. I wish we would have been told that we would not have a chance to go to our hotel from airport prior to commencing the tour and I wish we would have known that the boat was literally going "under" the waterfall three times!-- we thought it would be behind the falls instead of being inundated.