Answer: noshows

AnswerCrossword Clue
NOSHOWS

Those with reservations about reservations?

NOSHOWS

They didn't make it

NOSHOWS

Stand-up guys?

NOSHOWS
People who missed the boat, so to speak
NOSHOWS
Absentees
NOSHOWSReservation neglecters
NOSHOWSAirline bane
NOSHOWSUnexpected absentees
NOSHOWSAbsentee ticket-holders
NOSHOWSAbsentees at airports
NOSHOWSThey don't make it
NOSHOWSMissing persons
NOSHOWSRestaurateurs' banes
NOSHOWSAppointment disappointments
NOSHOWSGuest who forgot to cancel