In the U.S. it's a per-store basis, and often they won't give you a discount unless you're using their own brand of bowl/mug/whatever which itself is often plas

In the U.S. it's a per-store basis, and often they won't give you a discount unless you're using their own brand of bowl/mug/whatever which itself is often plastic and probably leeching chemicals into the food every time they refill it.