That instructors job is to teach the average beginner (more often than not children), not a 37 year old with no experience and a season pass, who's on a mission to become an expert rider in 20 days or less...
That instructors job is to teach anyone that shows up to take a lesson. Age doesn't factor into it.
A 37 year old with no experience, but a season pass and their own gear sounds like a motivated individual to me. In theory kind of an ideal first time student particularly if they have some athletic ability.
Navigating Black level terrain with linked turns should be no problem for most people in 20 days....with a little coaching help.