Almost 50 years ago, when on our honeymoon(!), I experienced mountain sickness in Cusco, Peru. Horrible experience, one I'd rather not repeat! Quito, where COPA is taking us (that's the connection to this forum) next week, is pretty high. Anybody suffer that malady in Quito? (Yeah, I know, coca tea is the answer to everything, but I was thinking about taking a few days of diamox.) Will up and down to elevation in short period of time, going to and from Amazon cruise and Galapagos tour, make any difference in terms of equilibration?