On the several times I've been out there, always had at least a day below 8000', and always had a raging headache that day. Never any other day. Not while camping at 10500, not at 13K. But it affects folks differently, so that's the real thing to mentally get prepared for, the unknown. But I wouldn't anticipate it being a trip-ruining thing.
Wish I could join in, but my days this year are spoken for. Maybe next year.
Bookmarks