Rio De Janeiro is not Brazil's capital city, yet it is much more visited by tourists from around the world. One of the reasons why Rio is more popular than capital Brasilia is that it is brimming with nightlife. Anyone has the freedom to be the person they want to be in Rio, making it a very fulfilling experience for those travelers that choose to spend at least a few nights in the city.
The Caipirinha is Brazil's famous cocktail, and it is a kind of national trademark. Originally, the drink was made from a blend of lime, sugar, cachaça, and ice, but these days different places can make the drink with changes to the original recipe. You should be warned that he drinks are exceptionally strong, so you should try to keep the drinking in moderation unless inhibition is the thing you want.