If a wine bottle is sealed with a cork, then it is opened with a corkscrew.
Not long in my house but it can stay open for weeks without ill effects to the wine or to you.
Yes, once opened, boxed wine should be refrigerated.
A bottle of an opened white wine is OK for about a week. A bottle of an opened red wine can last about a month. How do you put a spoon in a wine bottle?
Yes you can, as long as it was not opened, and wine is not dated.
Not sure how good chocolate wine is before opening...
Once it is opened, a bottle of white wine will spoil in 3-4 days even in the refrigerator.
Bottles of sparkling wine are on very rare occasions opened with a sword.
It's practically ageless until it's opened, and even then, you have a good 2 weeks or so.
Champagne
Vermouth is a wine. Once it is opened it can last for months, but no longer than that. Then the flavour tends to deteriorate, though you can still use it for cooking. The flavour is always best when martini is freshly opened.
No wine ever becomes poison/