A helicopter may be fast, the train may be easy, but the hike is a must do. There are lots of ruins along the trail that you can’t see any other way. The sharing with other trekkers of the joys and triumph is part of the fun.
Quick Tips:
Don't be too proud to hire a porter, but don't be too cheap to tip them well. The tour companies will promise that your porter only carries your stuff, but then they have them carry three other peoples stuff and a couple of tents and a teapot.
Make sure you have rain gear and a good tent. The weather is changes often on the trail and if you are prepared you will be much happier.
Get acclimated to the altitude. Those on our hike who hadn't acclimated were struggling.
Best Way To Get Around:
Hike in Train out. Make sure you have a seat on the train. It is a long ride back. Consider getting off the train at Ollantambo and taking a bus from there. It is very cheap less than and will save you hours on the train.