Beautiful pictures. I would have loved to have shot Kodachrome before Kodak stopped manufacturing it; the closest we can get today is Ektachrome (which has also been reformulated over the years).
Velvia was another film stock that seemed to have an outsized personality.
Always like KC 25 a lot more than the colors of Fuji's Velvia which while nominally ISO 50 was really about the same effective speed.