I do agree it was unfair your partner got to miss out on a double shoot that they would have enjoyed. If they did it for one they should have offered it to others as not to show favoritism. It was especially bad to do it so open. But I also agree with Queen Sindel though that In a situation like this there's always going to be someone upset. Due to their schedules they have to stick to as to not disrupt other parts of the con (as in talks, shoots and autograph signing) so I can see why it would cause problems if they did offer the arrangement to everyone.