Just incase you didn´t know...

PERU

Cusco airport is closed during the evenings

You can not get from Lima to Machu Picchu and back to Lima in one day

There is alot more to see than just Machu Picchu

Yes people in Peru speak Spanish. Funnily so do the tour guides

Many different climates can be found in Peru

During the rainy season it is also summer

During the dry season it is also winter 

Macho Picu Macu Pico Mancho Picca Machu Picchu is how it is spelt

There is no point in trying to go to the Amazon Jungle in 1 day

The Inca Trail needs to be booked in advance

BRAZIL

Residents from many countries will need visas to visit Brazil

Yes, you will need a visa even for layovers

The weather does change depending on the season and area

There are different time zones throughout the country

Brazil is not a cheap country to travel in

Prices during Carnival are extremely high

If you want to travel during Carnival, this should be done in advance

There are more places to visit than just Rio de Janeiro