Onsen etiquette

First off, tattoos are not allowed in most places so if you have one, cover it up with a waterproof bandage. Next, swimsuits aren't allowed so be ready to go nude. Third, make sure to wash yourself thoroughly with the shower before entering the bath. And swimming inside the bath isn't allowed so just sit and relax. Those are the basics I think, but there's more details on this website. I hope you enjoy your first onsen experience! http://www.onsenjapan.net/onsenbasics.php