Number of people: 1+
Time of day: Day or Night
Duration: 1 - 2hours
Budget: $5 - $30 (depending on if you get food or not)
Its coffee... don't need any instructions just drive/bus/taxi/train/walk (what ever your mode of transport is) to the coffee shop and sit drink and talk about lots of crap.
Guidelines:
If you're not a coffee drinker there's always hot chocolate, tea, and other stuff. If you don't know any good coffee shops, I'd recommend looking up reviews of coffee shops before you go, do a quick Google search.
If you're going at night time make sure the cafe you're going to is open at night, most cafe's close in the afternoon, but there are night time cafes.