My brother runs a night club, and he asked me how would one say in English that a night club may close later if there are still lots of customers, in a way to put this on a plaque with working hours?
I have thought of "In case of high demand we may be open for longer" or "In case of high demand we may close later”. I don't want to state "we work until the last visitor", because "last visitor" may never leave under certain conditions, which wouldn't make the staff happy :)
I am not so sure about "high demand" really meaning "lots of customers". Is it clear right away, or it can be misunderstood?
Is there any better, shorter, or commonly used way to say the same?