No - they did NOT give me a letter. They simply asked me to sign a piece of paper stating I would leave Schengen for one day.
They did give me a piece of paper that says "Potwierdzenie Złożenia Wnioaku" at the top. I think it means "confirmation of delivery of papers" in this context. I did carry this with me during my trip, but they never asked for it.
They did give me a piece of paper that says "Potwierdzenie Złożenia Wnioaku" at the top. I think it means "confirmation of delivery of papers" in this context. I did carry this with me during my trip, but they never asked for it.