Thanks for the heads-up on the altitude difference. Most in group are using Diamox. I have not experienced any problems previously but I know that is no great indicator of what this trip will be like. I have spent some time reviewing the subject of AMS, HAPE and HACE and noted that one of the corrective options for HAPE is Nifedipine which lowers the blood pressure. I typically have low blood pressure as the norm so maybe that has something to do with it.
