What Is The Policy For Honoring Competitor Prescription Coupons?

I have a competitor prescription coupon from Wegmen's prescription dept. at Wegmen's grocery stores, which give me a $20 gift card for every prescription I have filled. I does not indicate that the prescription must be new or a refill. I asked if my CVS would honor it. Before the store mgr stated that CVS Olney would not honor a Meijers prescription coupon since it was outside a radius of x-number of miles (5, 10 or 20?). I can't recall the exact number of miles the store manager stated. So, what is your policy? The nearest Wegman's is Germantown, MD and the Olney CVS is located 13.1 miles away from it but there are CVS stores in Germantown too. Do I need to get a prescription filled at the Germantown CVS so that the coupon can be honored, or can I get it filled at my local Olney, MD 20832 CVS?