If you want to close it early and not anger those who aren't in SK, give everyone, via mail, the equivilant tokens we could earn from events and logins from the final week. Make it a larger announcement, next few days (I only learned from people in-game talking) so people who planned to have a final week (and may have taken the weekend off for halloween festivities) don't feel screwed when they learn the event was cut a whole week. 

I understand you want to morne, but this is a way to prevent a large portion of your non-affected people not only from being upset but the massive amount of tickets you're going to see from those who knew nothing of the tragedy in SK. Honestly if you have ANYONE who works a PR department at Pearl Abyss, they dropped the ball on this tiny suggestion that would have made everyone tolerate your reasoning for ending an in-game event for IRL tragedies that were mostly unrelated to the game and even halloween (it was a massive gathering that shouldn't have happened).

I learned of the tragedy the day it happened, it did not stop me from celebrating halloween, I don't relate the tragedy to the day but to a lot of people who had a lot to get out of their system and chose this event. 

Check maintenance notes........