That doesn't mean an Ambassador cannot get a ticket, they just might not be able to get their own regular seat.
There appears to to have been some misleading reports that the game was a sell out but there's still availability now and most likely right up until kick off.
Call the ticket office on 0845 345 1400, visit in person or via the e-ticketing website.
Let's show Reading what a hostile atmosphere is and help get the Bluebirds to Wembley.
Cardiff v Reading
7:45pm Tuesday May 17th.