I am planning a trip for my family to Europe during July. I would like all of us to experience a majestic via "1 day" ferrata hiking experience. My kids are 13 and 14. My wife and I are in our 40's. We are all athletic. Ideally the hike would be near Cortina, Garmish or Berchtesgaden. Can anyone recommend an english speaking guide? Is a guide necessary for "klettersteig alpspitz" via ferrata? ...or could we just rent the gear? I appreciate any suggestions.