Kath and Charme are in the city, so they couldn't obey the command to go to the Climax Hour even if they wanted.
Gromgard, Ashara and LCB are fighting our GM's personified avatar, so they can't go there either.

I'm sure all the minor NPCs are headed there though. At least the Shadowtower Shrine Maidens are, as are the golems of the COIN.

[b]EDIT:[/b]

Hey, Isolde tried to be clever! Not her fault she's not good at deception! :<