Nie wieder/never again: long brewing traditions, delicious beer, and food multiplied by the most unprofessional and rude service I've experienced. Objective disadvantages: 1) only cash and no note/no explanation about it, i.e. you get informed at the end of your visit, 2) no client-orientated approach - you feel like a number in the line. And now some words about my subjective experience: A waiter acted as if I owed him, due to the fact that I decided to visit this place. I was there for the first time and, the local specifics such as the inability to pay by card, local beer varieties, evening menu, etc.were unknown to me. Instead of help or short clarifications, I was rudely greeted with the phrase - "you need to register due to Covid 19, using the bar code otherwise leave the house". Then the waiter ran away on his own business, leaving me without any explanations for the procedure and even a menu. After 5 minutes of expectation, I kindly ask him (while he was running to the guests sitting in front of me) for a menu. Instead of the menu, I received a rude phrase "what will you drink - was trinkst du?". I automatically asked for the most famous type of beer in Düsseldorf - "Alt". The menu (only for the served food options) appeared with the first glass of beer after a couple of minutes. By the way, I chose my dish enjoying the beer. The food was brought quickly and it was really delicious. At the same time, no explanation about the types of beer served, no drinks menu was provided to me at all! After deciding to pay for my dinner, I called my extremely busy waiter again. And then the surprises began. It turned out that it is possible to pay in cash only and that "everyone knows about it and it has always been like that". Further, instead of trying to find solutions, threats and demands came from the waiter. He almost forcibly tried to take my ID from my wallet. Leaving my waiter another document (not ID, but also my identity document - actually, it was not easy to do, since he refused to accept it -) I had to find an ATM of my bank and return to the famous beer house. It is pitty, but I have not received any even formal apologies, not even a hint of them from my waiter. In this regard, I had to complain to his colleagues and the manager of the beer house. I hope that the promise will be kept and some actions will be undertaken. My subjective advice to the management of this place (you can follow it or not, it's your own business) - the client does not have to know the rules and features of your beer house in advance. If only local customers (regulars) are important to you, then this is your marketing strategy, which I am not going to interfere with either. Perhaps not all of your waiters are so rude and unprofessional as I came across. But the name of your beer house, in my opinion, fundamentally does not correspond to the level of service that was provided on 10/04/2020. To be honest, I was shocked by this behavior, since I have not met such an attitude in any country in the world, and especially in Germany. By the way, I visited directly another famous place for a couple of "Alt" and my experience there was positive.