Leaving Damian to sit alone and scowl about how everyone's idiots, possibly while calling Jason a traitor. He'll also probably be inwardly enraged at the whole wedding, but outwardly have to force himself to act like a normal kid for the public.

Also good, that means my original post for the morning of the wedding can still work. Also also at this rate Damian will never learn the true meaning of Christmas, since if my math works out on the timeline this is his first Christmas at Wayne Manor and I'm pretty sure the Al Ghuls don't celebrate it.

I also feel like he would be highly disturbed at the idea of Santa Claus once he finds out.

 "You don't understand! He's an all-seeing, immortal being that keeps all of Earth's children under constant surveillance, living only to judge your morality and capable of penetrating any security system!"