of corse they have a HUGE!!! cake and hats and more...
There's an entrance to enter thats how you get your hat lol anyways also if your a Member Over year old on cp and have attended Clubpenguin's birthday in the past they send you an invitation so you don't forget...Its weird they send it too you 3 months in advents lol just hope i don't lose it.i will try to show a picture