Dear Santa,
When you visit our country this year, please be careful not to make any faux pas. Remember, you're a "gaijin," so although you are allowed to break many of the rules in Japan, there are still some customs you should follow.
First of all, no kissing mommy. A polite bow will do. And keep your voice down -- a loud "Ho ho ho" would be very impolite and embarrassing. Keep gestures to a minimum.