If you've ever been to Japan you'd know that their toilet facilities will give you cultural shock. Particularly the public bathrooms where one approaches the porcelain god in a totally different fashion.
In Hotels and in some homes, you will more than likely find the potty designed to American Standards with the exception of a bit of electronic comforts. Such as seat warming, water spritzing and bidet qualities.
But if you have to go, and trust me... you WILL have to go! Beware of their Candid Porta-pots!
That's just...wrong.