Hello,

New to wines, but trying to learn.

I've read that wine bottles should always be stored horizontally.
I guess that this is to keep the cork (if a natural cork) always wet.
a. Are there other reasons also ?

b. What about if the bottle came with a plastic cork substitute ? Horiz.
still desireable ?

And,

c. Once opened, and the natural cork is replaced by one of those plastic
cam-expansion caps, is it still necessary or desireable to store the bottle
horizontally ?

Why ?

Thanks,
Bob