Clarence - my husband and I are booked May 21st for the same Viking Cruise. We are in our mid 60's - both is pretty good shape. I still ride my horses and my husband hunts big game - recently got back from Turkey on an Ibex hunt. Did the altitiude bother you? We lived in Denver 10 years but I did have a problem when skiing A basin. Loved your travel log.
Thanks - Ann