Though some you must insist they follow thru on.
Bought a car and got a “premium detailing coupon” with it. When I used it, I had to argue with them over the notion that a quick vacuum and rinse hardly constituted “premium detailing”.
I once worked for the Firestone company for like one week but in that time I was able to get some incredible corporate coupons. Stuff like a tuneup for $15 etc.. I actually laminated those coupons and used them for the following 10 years until I lost them.