All I can say is "Been there, done that".
Yes the transforming bathroom and the *Oh God What Just Happened* tube squirting water everywhere. There's also the vibrating massage function, the blast of hot air drying your rear, the differentially heated seat, the traditional style toilet that emerges from a shell in the floor when you stand in the wrong place in a room ....
Lets just say that Japan can be a remarkably startling place for anyone from the west with an engineer's mentality of "oh, lets see what this button does" and no patience for asking advice beforehand..
(bring a change of clothes, just in case)
Biting the hand that feeds IT
