As long as the seal is put back on it, practically forever. 10 years at least.
Yes, depending on storage conditions.
yes
Yes ,But it is not as good . I would drink it just to see what it is like .
Chardonnay is good for about 7 years unopened.
Yes, hard liquor lasts for a really long time unopened.
A bottle of Crown Royal gets better with age as long as it has not been opened or any air has gotten into it.
If the bottle is unopened, kept cool, and out of the sun, it will last a lifetime. If it's been opened, it will still be good for at least five years.
An unopened bottle of Pennsylvania Dutch egg nog will be good for up to seven months. This variety of egg nog contains alcohol.
Drink it! It's still good provided it's been kept cool and out of the sun.
Nothing can stay good if it never was.
If well stored, then yes for both of them. Though, "good" maybe more for someone who is used to old wines. As for value, you should get around 100 $ for it.
Practically forever.
Potentially centuries if it is good quality originally.
If you open the bottle, you need to keep it refrigerated and it will last for a month. If it is an unopened bottle it should last for about a year :)