Confused if we really need a China Visa or Hongkong Visa...(";)?

Me and my daughter is going to join Diamond Princess next month...Our iternary is Hongkong, Vietnam, Singapore, Thailand...then back in Hongkong again..Do we need a China Visa for this tour? or a Hongkong Visa...Our cruise is about 17 days...but mostly we will on the ship and it is almost 12 hours to stanby per port...Thank you so much for the answer.God Bless...
1 day ago - 3 days left to answer.
Additional Details
This is the Travel Summary they given to us...
Wed 10/17/12 HONG KONG, CHINA ARRIVE 8:00AM
DEPART 7:00PM
Thu 10/18/12 AT SEA
Fri 10/19/12 NHA TRANG, VIETNAM ARRIVE 8:00AM
DEPART 5:00PM
Sat 10/20/12 HO CHI MINH CITY (PHU MY), VIETNAM ARRIVE 7:00AM
DEPART 6:00PM
Sun 10/21/12 AT SEA
Mon 10/22/12 SINGAPORE ARRIVE 9:00AM
DEPART 7:00PM
Tue 10/23/12 AT SEA
Wed 10/24/12 AT SEA
Thu 10/25/12 BANGKOK (LAEM CHABANG), THAILAND ARRIVE 4:00AM
Thu 10/25/12 BANGKOK (LAEM CHABANG), THAILAND
No Transfer From Ship
You have not purchased a transfer from Princess Cruises for the end of your
cruise, therefore you are responsible for your own transfer arrangements.
Your itinerary includes 3 formal nights and 13 smart casual nights.
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Important Notices
Any important notices or special requests relating to your cruise vacation are listed below.
DOCUMENTS YOU WILL NEED
Non-U.S./Non-Canadian citizens, in addition to passport requirements please verify your visa requirements for each port on your cruise