Plenty of passholder seats near me were down as sold using online ticketing, but were empty.
Looks like they didn't go on general sale until very late, if at all.
Maybe people didn't lie.
Quote: "A limited number of tickets will also be available at the ground on match day. Cash sales will be available from the West Stand ticket unit opposite the main reception. Tickets can also be bought with a credit or debit card from the automated ticket machines at the ticket office.'"