I am only bringing this up because none of the other characters reacted at all to Zimnis's wager with the barkeeper. I don't think a perception check is required for them to know about Zimnis's deal, either. If his show goes poorly, they have to buy a drink. If his show goes well, they get a free drink. They should probably react to this in some way, whether they want a drink or not.

Your character's reasons for wanting or not wanting a drink are up to you, but no one has given any indication or even reacted either way thus far.