Racist hotel, we were here because our flight dela...

Racist hotel, we were here because our flight delay, so we got meal coupons from Qatar airway. But, every time we come to the cafeteria trying to spend the coupons, they always tell us "come back later", or.. oh you have to book in advance (funny...they told us the restaurant opens at 18:30 for dinner but the restaurant was packed at18:30, get the point? And people in there are all Arabians, get the point again?) Anyway, after arguing with them , we got a table right away, why? I thought it's just opened, and fully booked, why all of a sudden there is a table available?