Happy Hour Specials

Anyone using “Happy Hour” specials on quieter nights?
We have been doing it for a couple of weeks now using Facebook and are seeing a increasing take up.
We tend to do specials on the quieter hours, such 5 - 6pm Mon & Tues, 8 - 9pm on Wed & Thurs.
Tonight we have 2 Large, Garlic bread and 1.25lt drink for $30. No deals would be $39.9. With 2 large deal combined with drink/bread combo $34
So which ever way we market it there is a saving which hopefully will bring in extra sales on quiet nights.