I came here for lunch this week and they couldn't have been more lovely and helpful! Everything in the buffet is vegetarian with about half the hot dishes being vegan and plenty of side salads. When I told them I was vegan, they made me up some vegan spring rolls especially for me, so I was very grateful. They certainly went out of their way to accommodate me as a vegan and I would definitely recommend them, especially as Foz do Igacu is not the most veg-friendly of places.
Cons: Not all the staff understand what vegan , is so need to be clear.