As a character he's not especially fond of large social events, doesn't like dressing up, doesn't leave his hoodie anywhere out of his sight, and doesn't know anyone who would attend the party. On top of that he doesn't like Christmas much, so it's probably best to have him spend time somewhere else.

That being said, if we're both on Chatzy sometime maybe we could find a way to make it happen. Unlikely, but it's worth a shot. Throwing James and Amity in close proximity could have interesting consequences.