Does anyone know if we should bring U.S. money to Peru, or should we exchange for Peruvian money?
I've traveled to Cusco and the highlands three times, though not with Disney. Most recently, two years ago, we did a 17 day family trip, hiked the Inca Trail, and as a warm-up we hiked from Pisac to the ruins above Pisac (note that trail along the face of the mountain - yeah, we were there - I never wanted to look down - that was scarey as all get out). We spent quite a bit of time in Cusco and the surrounding areas.
Money - US dollars will be fine. Make sure your bills are crisp and in good condition- no tears or stains. In fact, go to the bank and get new bills as it will make your shopping and spending easier. A bill is a bill here - not so in Peru. US dollars are preferred.
Altitude - drink lots of water - it is easy to dehydrate. Take it easy the first day at high altitude. Enjoy the coca tea when you first arrive - it really does help with the altitude.
Shoes - hiking boots are preferred if you are going to do any kind of real hiking. Athletic shoes with good tread and good support will work for city and sacred valley tours (including Ollataytambo) that I see on the Disney agenda. If you don't have good supportive tennis shoes, then I would recommend light hiking boots. I wouldn't advise sandals but I would advise having comfy shoes to relax in!
According to the itinerary, Disney initially stays in the Sacred Valley, which is a few thousand feet lower than Cusco, so altitude won't be as much of a problem. By the time you stay in Cusco you will be better aclimatized.
Bring sunscreen - the sun is strong
Bring a sweatshirt - you are at a high altitude and when the sun goes down, so does the temperature.
If you are a star gazer, you will enjoy looking at the southern hemisphere sky - the constellations are beautiful and the sky very clear and easy to see the stars.
If anyone is ever interested in a return trip to Cusco, I have friends in Cusco and would recommend their home to you. They will accomodate travelers in their home (located in a safe neighborhood) and provide room and meals for a very reasonable rate. I stayed with this husband and wife back in 1998, 1999 and again in 2006 for my family's trip. And of course, home cooked meals can't be beat!
Any other questions I would be glad to answer! I love Peru!