It does not matter to us what others wear when dining and in public, we prefer to wear jackets at dinner, tie optional, we dress in our tuxes for formal nights, if others chose to wear "casual" clothing" that is their purgative.
My parents used to preach to me "I don't care what other parents let their kids do, my child is going to look like someone when they are out in public" Guess that just stuck with me and my hubby, guess our parents came from the same generation.