I am putting together a 6 day itinerary for my family (6 and 9 year old) in the MP area. We are spending most of our time at the Tambo del Inka. Unfortunately we missed out on getting a permit for the 2 day Inca Trail hike so we are going to do this on my own. From reading here it looks like about 2 hours from the hotels train station to Aguas Calientes so getting there at the opening is not an option.

1. If we want to do the Huaynapicchu can we get there in time to do the 10 am option?
2. Does http://www.machupicchu.gob.pe/ work? I am able to enter my information but it always freezes when I go to checkout.
3. Should I do Cuzco as a day trip from Tambo del Inka and take advantage of 5th night free or should I just spend my last night in Cuzco and take advantage of a local hotel? I cannot figure out which timing makes sense, I have a 1PM flight back to Lima.