William Getting to Kamiamakusa is not difficult: an extremely scenic train ride to Misumi (which in itself is worth the trip), and then a taxi - or a direct bus from Kotsu Center for a bit over about ¥1,500. This is what you get: bring your swimfins. Our friend Enrico at KamiAmakusa Real Experience has details: https://www.facebook.com/KArealexperience