can your customers bring in their own wine and pay a corkage fee.

Yes- $20 corkage fee

I am guessing no.

I don't know but I suspect if one is willing to spend enough so that they notice it may work. A couple hundred here and a couple hundred there and things smooth out.

Not that I know

Sorry...we went for lunch...

Most likely

I do not know. You could call them and ask.