With the U.S.'s new restrictions, you need a passport any time you leave the country. You'll want the birth certificate to get the passport, though, so in a sense you do use it to go on a cruise.
Yes you will need a passport if the sailing is after June 2009. But if you are traveling before that you can still use your birth certificate.
No. There is no photo on the birth certificate. It could belong to anyone.
no. your birth certificate folows you the rest of your life. but you parhaps do not want to use it.
It depends on the use of the birth certificate... more details please.
sure y not
No you need a passport
No
No. You can use a passport, US passport card, "enhanced" drivers license or "enhanced" non-drivers ID.No. For travel between countries in North America you must use either a passport (booklet mandatory for international air travel), a US passport card, or an enhanced state drivers license or non-drivers ID. A birth certificate is not sufficient.
No you need a passport.
No.
No