Stay overnight in Aguas Calientes and get the first bus up the mountain in the morning (5.30am). It really is worth being there for sunrise and before the hoards arrive. Fantastic sight. Expect to be wowed and want to stay all day.
Take water with you as they don't stop you taking it in and you will need it up there. The cafe sells water but at vastly hiked costs. Just remember to take your rubbish home with you.
Up a mountain!
Send your feedback or queries to been.there@guardian.co.uk
Search Been there