Club Penguin appears to be emailing some penguins a free 7 day membership code. It is not known how exactly they pick who to send it to. Here is what the email looks like. Thanks Mamu35!
It says “Unlock the best of the Holiday Party with your FREE 7-Day MEMBERSHIP CODE!”. Of course, the code can only be used once.
This is not the first time Club Penguin has emailed some penguins a free 7 day membership code. The same thing happened with parties such as the Adventure Party: Temple of Fruit in August of this year.