A dead Friday

I have more than 2 years experience in restaurant. Friday night is always the busiest shift of the week. But yesterday was a total dead. I guess everyone goes back to hometown because we have a long weekend holiday. Next Monday is a bank holiday (public holiday). Last night from 6pm - 8pm, the restaurant was empty. Then customers started to come in after 8pm. Whole night, we did 38 covers only, compare to the usual 100 covers on Friday night. Obviously, the restaurant was losing money last night. I think they dun even make enough money to pay the staffs last night.