Taking an old-school approach and heading to Footscray to buy tickets to Saturday's preliminary final paid off for 83-year-old Western Bulldogs fan Betty Hayes on Monday morning.

As scores of footygoers reported issues with securing tickets online, Dogs fans like Hayes, who chose to brave the cold and queue overnight, are now comfortably holding finals tickets.

Diehard fans were previously warned of "high demand" given GWS' Spotless Stadium home in Sydney only seats around 24,000 people.

Bulldogs members fear they will be left without a ticket, given their club has approximately 40,000 members. Greater Western Sydney's membership, meanwhile, numbers around 16,000.