The barkeep is an irrelevant man in the Bar. "The barkeep is busy serving drinks to thirsty clubbers." The description is "He's working like crazy to get the drinks to everyone. It's a busy night."
Understand "keep" and "bartender" and "barkeeper" as the barkeep.
Instead of talking to the barkeep:
say "'Sorry, too busy to chat,' the barkeep says and moves on to the next customer."
Instead of showing a drink to the barkeep:
say "The barkeep takes the drink and throws it away.";
reset the noun.
Instead of showing the coins to the barkeep:
say "All the items cost more than what you have."
The hint list of the barkeep is the table of unbought drink hints.