Who knocks on their own hotel room? And who would go straight to the elevator if there were more hotel rooms to check?
He must have really enjoyed the visit to IFF plant in New Jersey. IFF might have attracted him because of their good discovery of flavors fragrances and cosmetic ingredients have inspired and delighted him to include so much detail.
Either on and off campus experience or living at home, in a dorm, and in apartment.
You can chose on what you think is the best.
Maybe someone else can help us both