My children don't speak Japanese. No kidding! I haven't taught them.
Main reason was...I did not have anyone who speaks my language around us at the time.
I've met some people and did some networking. But first several years since I moved here, I did not have Japanese friends.
I tried to speak to them in my language but I am so used to speak English...it did not last very long.
Well, I am hoping that this trip will help my boys to get used to our culture.