Hi everyone, my husband and I will be in Peru in December around the holidays. We are thinking about planning a SHORT trip to Cuzco/MaPi (leaving our 2 yr old in Lima with family). It's been about 15 years since I last traveled to Cuzco (and things have apparently changed--drastically--since then). I dont even know where to begin. I've read that tickets to the park should be booked first (and I'm assuming train tickets must come in a short second?)... I'm nervous about purchasing the wrong thing on-line (wrong train, wrong hotel, wrong location)...Also, my husband is nervous about altitude sickness; so, we were thinking: fly from LIM to Cuzco on the 25th (Christmas) morning and head straight to Olly (sacred valley?) stay the night the 25th and train into MaPi the morning of the 26th. Stay all day at the park and night in Aguas. Head back to Cuzco on the 27th early morning and spend the day in the city (maybe even out to Sac) and fly back to LIM on the morning of the 28th. Is Macchupichu closed on Mondays/Holidays? Does this itinerary work? What about getting from point to point? Are some trains better than others? We'll probably not be going back to Peru for some time; so, we're trying to give ourselves a moderate budget to do it right! Any recs, appreciated!!!