Other than visiting the falls, the activities offered by tour operators on both sides of the park and having a drink/ dinner at either Pt. Iguazu or Foz de Iguazo there isn't much else to do in this area. So don't plan on staying your entire holiday here, 2 or max 3 days should do it. For the Brazil side you need no more than 4 hours total. Its often cheaper to fly out of the Brasilian side to Sao Paulo for example, than to take the bus not to mention quicker.
