Hi, @DanniS !
I live in northern Brazil, but I had the opportunity to go twice. I’ve never been on the side of Argentina, but on the Brazilian you have a vision of the people on the other side which is in Argentina.
The ride is amazing, but no doubt what else liked was when I arrived in the famous Devil’s Throat. (Prepares to bathe 
).
There are many attractions, in my case I did the ride normal. Cost R$ 43,00, but prices differentiate. I will put the link Park for you take a look.