My group of friends and I bought food at the kebab shop next to your place and wanted to sit at your tables, a very kind waitress came over and said that if we wanted to use your tables we would be required to order from your menu, a very reasonable demand. I decided I would have a coffee and was brought a wonderful looking cappuccino. The manager came over and started giving us a tough time. She asked if anyone else was going to order anything and they did not want to at the time, she said that the table was for café customers only, I said that I had already bought a coffee from you, she replied "One coffee, really?" with a very disrespectful attitude. I understand that if the tables are very limited and you had a lot of customers, me ordering one coffee could be an issue but there were many other open tables, only one other table was occupied by a couple. Maybe if we were allowed to sit for 5 minutes before being harassed, one of my friends would also have decided to buy something. I would give you 0 stars if I could, but unfortunately it's not possible. The only plus was the good manners and attitude of the waitress that helped us before the manager started being so rude. I asked for a refund and left.
An edit in response to your reply. We were 5 people, not 7-8. 2 of us had already checked in using the barcode on your table. The other 3 people had just come to sit down for barely a minute or two before we were chased away.