Actually, I do have advise for the altitude. When we have friends visit we have a newbie kit. In addition to drinking tons of water I recommend taking asprin at regular intervals as it helps to thin the blood. Also take ginger in whatever form you can. Good for your tummy and also a blood thinner. We have ginger drops from Hammonds Candy in Denver, but Celestial Seasonings also has a ginger tea we keep on hand as well. This one works nicely.