Cosmo World schedule

I am planning on visiting Cosmo World in Yokohama on a Monday in May. Is the site open daily? I know many places are closed on Mondays and just want to make sure I'll be able to go.

Also, does anyone know how the prices work? Do you pay one entrance fee or pay per ride? I tried visiting the Cosmo World website, but it is all in Japanese and I can't read it.

Thanks in advance.

The official website:
http://www.senyo.co.jp/cosmo/

As for business days and hours, I think the following Japanese page is pretty self explanatory (gey means closure day):
http://www.senyo.co.jp/cosmo/hours/index.htm

Pricing works in a way that each attraction has its individual admission price, typically between 100 and 700 yen. And there are coupon booklets on sale, which give a small discount over single purchase.