I have been there today. The waitress accused me of not having payed my 3,50 € beer. The bar was full and it was unnecessarely embarassing! Even though obviously it was her fault, since she did not make me a ticket for the bill, it was my word and my husband's against hers.
I came back afterwards to speak with the owner (who pretended only speaking french), telling him to check the cameras or to count their money because of course I had already payed for my 3,50 € beer: in fact, I gave her 5,50 and she gave me back 2 euros for change. The owner treated me very rudely and told me to leave, saying that, from the moment I left, the fact had already been forgotten for him... I mean, he didn't apologize for the unnecessarly embarassing situation his waitress exposed me, but he even treted me as I really stole a damned 3,50 € beer!!!
I have been travelling a lot, my husband is a beer sommelier and we have visited many and many different places related to beer around the world, but we have NEVER passed through such a situation before.
Be sure to ask for your payment ticket once you are there... If you ever go there. I don't recommend. read more