For me, traveling has always brought me immense joy and excitement. It's a mix of different emotions that as a whole helps you to dive into the unknown with a smile on your face and a bag on your back.
The cuisine in Peru is unique. You should definitely try your way through the gastronomy. Be careful though, your stomach has to get used to the spices and bacteria. Enjoy it to the fullest, but take it slow!
If you know a few words of Spanish: Do not be shy and use your skills! A simple "Hola" can already make someones day.
If you are at a high altitude, be sure to use sunscreen. Even if the sun is not shining. You don't want to risk a fiery red forehead. ;)