If getting a ticket for the final is going to go off whether or not you went to the semi final, i don’t see how this can be proved. Many people will have bought three tickets on their season tickets for family etc, does that mean they are entitled to buy three on that same season ticket or just one?
I know my brother bought three including his two sons who have season tickets but bought them online quoting just his client code. I am sure a lot of people will have done it like this.
Will have to wait and see what the club decide.