For Christmas we have a few threads open to all where everyone can post, one for each city.
Bedlam City A very Bedlam Christmas
Freedom City More Bright Lights and Good Cheer
Emerald City Going Green for the Holidays
The dates of the events have been kept vague so characters can it you wish attend more than one, though you'd need a pretty good reason for most non-residents to go to Bedlam. Also as it's a fun filled holiday event if you wish you can have multiple character's in the same thread.
We'll also have a suitably seasonal vignette running throughout December.
Winter Wonderland
Enjoy!