Rio, the city of everything
Rio is amazing. There is so much to do and see, you will never be bored. Definitely check out all the touristy things, they may touristy but they are 100% worth your time and money. Christ the Redeemer and Sugarloaf were amazing! We learned how to play fotevolley, chilled on Copacabana and Ipanema beach, checked out Lapa for nightlife and ate at a lot of good restaurants. Porcao is a good one if you want churrasco (100 reals but very good selection and large buffet for salads/sushi).