I have been trying to get a handle on what is open and what is closed on Sundays. In some cities, everything is closed on Sundays, while in others, there is still plenty to do and see. I'm curious to know what the situation is here in Aachen.

Firstly, are grocery stores open on Sundays? Can I pick up some essentials or should I plan ahead? What about small snack shops or bakeries? Are they open as well? Or should I just stick to shopping on weekdays?

Secondly, are restaurants open on Sundays? If so, do they offer delivery to homes or is it just for take-out and dine-in options? I would appreciate any recommendations on restaurants that are open on Sundays in Aachen, especially those that deliver.