So, the day before this event is the Mayan Apocalypse and we expect to be celebrating 'Hey! We're still here!' in addition to the Holiday Season. So:
Come, gather on December 22rd for a cup of good cheer, visit the numerous local caches before the event, and maybe introduce a Muggle or two to our fun! Come have food and fun from 6:00 on. Family and friends all welcome!