Which of the following is NOT a type of problem customer?

The correct answer, responsible adults, is not classified as a problem customer because they understand their limits and consume alcohol in a manner that is considerate to themselves and those around them. Responsible adults adhere to the laws and guidelines regarding alcohol consumption, ensuring they do not pose risks to themselves, other patrons, or staff.

Underage customers, chronic drinkers, and troublemakers all share characteristics that can lead to potential issues in a licensed establishment. Underage customers can create legal liabilities for venues as serving them is against the law. Chronic drinkers often exhibit problematic behavior, which may lead to excessive consumption and problems for staff and other patrons. Troublemakers can disrupt the environment, posing safety risks or disturbances that affect everyone present. Thus, responsible adults stand out as they contribute positively to the drinking environment, ensuring safety and compliance with regulations.