Attitude about Altitude

Everyone keeps warning me about the altitude at Machu Pichu.  So, here is some research I did today.  Val and I climbed Cotapaxi Volcano in Ecuador.  We made it to the Refuge and were surrounded in the ladies bathroom with the sounds of puking.  We, I proudly say, did not puke!

Cotapaxi Refugio (for proof), note we are not puking!

We will be spending some time in Puno on Lake Titicaca before hitting Cusco and Machu Pichu.

So,
Quito, Ecuador  2850 m above sea level
Cotapaxi Refugio:  4810 m
Puno: 3827 m
Cusco: 3399 m
Machu Pichu: 2430 m

I think we will be fine.

But I do think it is time for some vaccinations from my travel nurse.  So, I will ask.