Excellent point, Dutch versus French side.

Plus, with regard to being able to bring your own food and drink and consume it while sitting in someone else's chairs, the chairs belong to them, so technically they can make the rules what you can do while you are sitting in their chairs. I 'walk with my feet' and don't patronize such people. If they give you free chairs, great, I appreciate that and don't bring my own stuff. If I pay to rent their chairs and they say I can't bring my own stuff and sit there, fine, I won't give them any of my money.