[Blueface]

Most port will hold easily well into a month and then more if refrigerated.
Even if not refrigerated, do you think all bars that open a bottle of port and don't sell it within a week throw it out? And since we know the answer, how many patrons complain when it is served?

My wife enjoys port regularly as we came to know of it nearly 40 years ago while living in a predominantly Portuguese neighborhood. Enjoy them all (vintage, ruby, tawny, LBV, White, etc) and pair them with any cigar. No rush to kill the bottle immediately. Wife keeps one in fridge to help with digestion. Truly calms an upset stomach. Chilled takes on a very interesting flavor.

The only ones I would be concerned with drinking right away are any in a pull out cork as with a bottle of wine, as opposed to the typical port t-cork.