I got a $10 meal voucher from AC for being bumped to a later flight from Timmins to YYZ. The voucher was good for up to a year, and even stated it could be used at any airport in Canada. Since the food options at the Timmins airport were lacking (the vending machine had no slot in which to insert the voucher!), I saved it for another day and used it landside in YYZ T3 a few weeks later. The restaurant clerk questioned whether they could accept it because AC didn't operate out of T3, but her manager approved it. YMMV.