Wait...are you saying that any coupon will invalidate it? If I rent a car for a weekend but use a random promotion on the hertz site, it will no longer work?

What about if I am using a company code (I usually do, but it doesn't cover LDW on personal rentals IIRC)?

My usbank platinum visa would still cover it though? I'd just rather use this new card when I get it...but I guess I can use the visa on rentals.