Get acclimatized for the hike. It is a much easier hike at the higher elevation and much more enjoyable doing the Salkantay tour. The food is spectacular , from the chef in the make shift kitchen by the tents. The scenery is a must to see. So many different changes in landscapes throughout the hikes.
Lots to see through the jungle and all the exotic fruits growing along the trails. The hot springs after 50 km of hiking was much needed. The reward is Machu Picchu and you respect the history so much more when you hike one of the trails.