I Rent From Avis Almost 5 Days A Week.i Have Never Not Been Able To Use My Af Free Day Coupons.usually I Don`t Book Them Into My Reservation,i Just Give Them To The Rental Agent @ Time Of Rental And They Take Them Fine.remember, Being Nice At The Counter Goes Aloooong Way!as Far As Hertz Goes, I Won`t Go There.******