Historical clue formulations

• Drink that comes with free refills — 2025-10-17
• Restaurant request on a hot day — 2025-07-07
• First pitcher, maybe — 2024-10-18
• Zero-calorie cooler — 2012-12-30
• Restaurant freebie — 2009-09-18
• Noncaloric cooler — 2003-09-12
• Summer cooler — 2003-06-07
• Free serving at a restaurant — 2002-07-22
• Diner freebie — 2002-05-15
• Restaurant offering — 2001-11-24
• Common restaurant request — 2000-07-01
• Restaurant freebie — 1998-05-15
• Summer cooler — 1996-04-18