Possible Clues:

• First to hear the news
• They have access to private information
• Fashionable drinks by the sound of it -- these could have an edge
• Behind-the-scenes group
• Those privy to restricted information
• Ones with special information, perhaps
• They're not out of it so know a lot of it
• Heard popular drinks for those with an advantage
• Knowledgeable group
• Those privy to info