How do you check that the tone matches the bar?
The text is read aloud at the bar: if the person who serves would not say it, it is not published. You keep the line you already use when you set the coffee down, not a finer one or a funnier one.
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Ask the person who opens to read the text without being told it is an ad. The text uses a joke and on the floor people speak another way. You get the line that is published and the one that was dropped, with the reason from the bar.