I always wonder why there are no pan-Europe deposit systems in place, or at least some sort of recognition across the countries.
Imagine you travel from one country to another, you grab a bottle of water for your trip, and then you are supposed to return that bottle only in the country where you originally got it.
Or you not only miss your deposit—sometimes you can’t even throw plastic bottles to recycling collection points just because the plastic bottle you got doesn’t have their local sign/icon printed on the packaging.
Sounds like it is designed to make it difficult and cumbersome… which is the opposite of what you’d hope for a wide adoption of practice.