WHAT VISAS DO WE NEED,AND WHAT PRICE,AND WHERE DO WE GET THEM.

MY PARTNER AND I ARE GOING ON A CRUISE TO THE FAR EAST,WE ARRIVE IN BEIJING ON THE 04/09/2013 AT 08.55,WE SPEND 3 NIGHTS IN A HOTEL IN BEIJING,THEN WE CRUISE FOR 12 DAYS,WE ARRIVE BACK IN BEIJING, ON THE 19/09/2013 FOR 2 NIGHTS,WE LEAVE BEIJING ON THE 21/09/2013 . THE PEOPLE AT PLANET CRUISE HAVE NOT BEEN VERY HELPFUL ON THIS SUBJECT,I THINK THAT ONCE THEY GOT THE MONIES FOR THIS CRUISE THAT WAS THE END OF IT AS FAR AS THEY ARE CONCERNED,,CAN YOU HELP?,,ALSO WE HAVE LOTS OF STOPS IN JAPAN,AND ONE IN SOUTH KOREA DO WE NEED VISAS FOR THEM??