I find those signs very amusing. They're so typical of local family-owned Arab and South Asian stores and restaurants. Another one I recall is: "Family and friends… please don't enter the kitchen during busy hours." Those seemingly common-sense courtesies ought to be printed in big bold letters and displayed on a high ledge in the store; otherwise you’ll find the whole tribe and next-of-kin marching all over the place…making themselves feel at home.
A very rare meal that we get to enjoy every once in a long while.