36 y/o?! That's no where near old!
At my local store, we have 2 gals in thier late 40's. They both have been working there for a long time (the first gal I remember... I first saw her there about 5 years ago).
Working at Mac should never be about age, it should be about skills.
And another thing is... I've worked with older people and younger people (in an array of jobs; retail, medical, foods, etc.). I have always noticed that majority of the younger employee's were NOT responsible. And the older employees had thier head on thier shoulders and very responsible.