Maybe it could be treated similar gathering.
You spend "X" hours "chatting up the local barkeeps"
Possible results could be:
1) a random number of kegs refilled for free.
2) you stagger away drunk with no kegs but had a great time.
3) you wake up the next morning with a hell of a headache (fatigue) and find yourself in the local jail.
4) you wake up in a back alley the next morning and find you have been robbed (silver or kegs).