It's a moot point for me really. A 4 pinter will last us a day, unless we're cooking quite a few things that require milk too then we use a bit more. Also, by "a day" I mean it'll last for morning coffee the next day, but then it's gone.

Open, sniff. If it doesn't smell a bit odd then drink. Dates are for idiots.
A.
It never gets to see a third day, as it is usually gone by then. I drink around 3-4 pints a day.
That's not healthy.
Who cares?