We had a PowerBook at work that fell onto the floor and dented the corner. A few months later, for an unrelated issue, it went into Apple for repair. They fixed the dent, too, without any questions. Maybe they thought they damaged it in shipment, I don't know.
Of course, if your MBA is working perfectly, that's not much of an option for you.
Of course, if your MBA is working perfectly, that's not much of an option for you.