Answer: OPENLATE

AnswerCrossword Clue
OPENLATEHaving long hours
OPENLATEServing until midnight, say
OPENLATEServing customers into the wee hours
OPENLATELike owlish niteries
OPENLATEStore sign welcomed by night owls
OPENLATELike many fast-food restaurants
OPENLATELike most bars
OPENLATENeon sign on many diners
OPENLATELike many a restaurant drive-thru
OPENLATEDiner sign
OPENLATENot closing before 10 or 11 p.m.