Goodness, some of you had such strict upbringings!
I did what I liked on Sundays, though bad behaviour would not have been tolerated on any day of the week.
We were expected to join in the grown-up conversation at mealtimes, and when there were visitors. No hint of ‘children should be seen and not heard’. I suspect we weren’t expected to dominate or lead the conversation, though.
It was taken as read that school work was the most important thing.
We had to ask permission to leave the table, but it was always given, even between courses. I remember gabbling “Please may I leave the table till the pudding comes?” I obviously thought pudding just “came” - descended from heaven, and was nothing to do with my mother’s hard work.