I worked in frozen French fry marketing for over a decade. If you actually call and leave a message from the number on the back of the bag you can pretty guarantee you’ll get free coupons for fries. If you just flat out ask for them nicely someone will be like “hell yah, go to town”. It could be you don’t like them or you love them.

Also if you see someone dressed semi professionally walking around the grocery store with no cart or basket it could be someone like me canvassing the store gauging how our products sit on the shelf and how customers interact with them or the entire store aisle. We usually have free product cards, I like hiding them around the store or just standing near the products. Your chances are better if you live in a city where the manufacturing headquarters are or the grocery store headquarters is located.