> "what does serving open to the customer mean"?
it means the bar is open i.e. the customer can get service at the bar. In some
restarurants the establishment will be open even though the bar is not and in
some of those places a descrete customer can still get a get a drink with the
right words to the waiter,so the bar would be open but not to customers.
Don't confuse this with an open bar at a banquet or catered event which means
that the guesst do not pay for drinks rather the host is billed later.
Dennis