Back when I was shooting (IDPA rules) 1-2 times a week I was shooting on a hot range.
Our guns were loaded from the first stage to the last stage.
You just did not touch or remove your weapon unless you were drawing to shoot.
If for some reason you had to leave the range everything paused while you safely unloaded at the line and showed clear.
You didn't reload until you came up to shoot your next stage.
I cannot fathom unholstering your weapon in a restaurant of all places!