Different airlines have different rules so it best to check with the airline that you intend to use.
No Where other than within the UK
You need a passport when travelling to a country other than your own and when returning to your own country from another country.
The NSK passport is not a real passport. It is a type of "camouflage" passport and never intended to be a valid document for citizenship. Slovenia is not granting citizenship or passports for people other than Slovenians.NSK passport is not a valid document.
None other than the passport.
A better question might be what possible legal/moral justification do you have for accessing someone else's passport details. There's no way I know of to get them other than to ask the person the passport belongs to, and this is exactly how it should be.
Nothing else.
because it is such a popular language, other than English and American
It is not possible to travel to Israel on a passport that is less than 6 months left on their passport as a passport is not a form of transport. You would be much better using an aeroplane or train if possble.
If you want to apply for a NSK passport:The NSK passport is not a real passport. It is a type of "camouflage" passport and never intended to be a valid document for citizenship. Slovenia is not granting citizenship or passports for people other than Slovenians.
If it involves going to another country, yes. And if your cruise lands somewhere other than Canada, Mexico, the Caribbean, or Bermuda, you'll need a passport book, not just the passport card. Source: http://travel.state.gov/passport/ppt_card/ppt_card_3926.html
No, unless you are stopping at the US.
Hawaii is one state of the United States, and has the same passport requirements as entry to any other part of the US. If you are a US resident, and traveling to Hawaii, then you would not need a passport any more than if traveling to North Carolina. If you are NOT a US resident, then same passport rules apply as to entry to any other part of the US. Aloha