City play Bristol City on Sunday August 23rd hence the Wednesday kick off in the cup.
Tickets cost £15 for adults, £8 for senior citizens and students and £5 for the U16's.
Ambassadors and season ticket holders have until end of play on Aug 20th to claim their seats or they will be made available for general sale.
Tickets go on sale from 9am on Monday August 17th.
Either online via e-ticketting, on the phone on 0845 345 1400 or in person from the ticket office at The Cardiff City Stadium.
