I read online that StubHub often considers ticket-buyers to no longer have a valid claim if they use a wrong or mis-advertised ticket (for instance, you bought an expensive seat behind home plate, but the ticket StubHub gives you is instead a nosebleed far away, a much cheaper kind.) Apparently, using the wrong ticket that was given to you, to enter a stadium, counts as “acceptance of goods as sold” and thus makes any subsequent complaint void.
But I haven’t heard of airlines doing this. I’m sure that if you pay for a first-class seat, but the airline instead puts you in economy, you can still complain and try to get a half-refund after the flight has ended.
Are sports events an exception?