i would allow this. but i would make sure that the players knew what was happening, but only indirectly
in my game one of my players got a little bit scared of a couple of fetches and decided to leg it towards a forest, turns out that some elves lived there and they werent happy to see them. Travis spoke to them and after being a bit of a smart ass to one of the elves, he was chalenged to a duel, the elf gave him the choice of duel. Travis has boozer as an aspect, and with out me compelling it, he chose drinking. so the elves set up tables and chairs and then put down horns of elven booze, he had two drinks then passed out, the elf then asked if the second would like to continue the contest, she said yes, then had three drinks and called it. i was thinking of being a jerk and then having them owe the elves some favours, but becuase it was within the confides of a duel i decided against it. but they are going to get a vist from a summer rep to tell them that they owe a favour