about the Only thing is to go back into MP, it used to be that either you got in for free the 2nd day or at the time you purchased your tkt if you got a 2 day one that it was just a few cents more for teh 2nd day. when I was there a few yrs ago it changed and you then pay Full Price for each day you go in.

If you stay at the Hotel up there you can enter or at least were able to to beable to experience the SunRise which they say is something nice from a certain place. dont think Id want to walk up there in the Pitch Dark. Our Shuttle stopped a few time sto pick up those who tried to walk up and just ran out of steam I believe they were charged the same as if they started out with us.

An alternative might be to take an early local train and get off and bus it back to Cuzco. there are a couple of places taht one can hike to on top, which we did and it was awesome. all in I was up there for around 4 1/2 hrs and took the last shuttle down (5:30pm), We didnt go on a guided tour and I was happy about that as those that I sort of joined in with for awhile at times got to me.