High-profile matches featuring F.C. Copenhagen—particularly domestic league showdowns against fierce rivals Brøndby IF (known as the New Firm derby) and high-stakes European fixtures in UEFA competitions hosted at Parken Stadium—frequently sell out entirely. The club commands a massive, deeply passionate fan base that routinely packs out the stadium stands, creating an electric and intimidating atmosphere. For standard regular-season fixtures against smaller opponents, ticket availability is more accessible, but advance booking is still strongly recommended for optimal seating categories.