I'm pretty certain you can just call into member services and they can post the coupon to your account. that way you don't even have to worry about it and can go directly to the fast break.
by the way.... i've got a volvo s class for 179 (with LDW) a week through budget.... i have a reservation once per week for the next 52 weeks (i sold my car, that's cheaper than owning)
check it out, if they say they don't have a volvo, the cadi cts is the same class, and they can transfer them in from avis.