Fun Fact: In the mall food courts here, you do NOT have to clean up after yourself. You can leave your trays on the table, and there are people who will come and bus your table. It’s pretty awesome and quite laziness-inducing.
There is also no sense of personal boundaries when it comes to eating. Almost all the tables here are big and family-styled. You kind of just create your own area and your companions depending on the direction your body is facing. Where there’s a seat in any restaurant or food court, feel free to sit. Even if it’s at a table for four, and there are already three people sitting there and chatting away. Just plop your tray down, put your head down, and dig in. They won’t mind at all. Really. Just don’t participate in their conversation. Now that would be considered rude.