Historical clue formulations

• Die-hard enthusiasts, and then some — 2023-01-07
• Rehab attendees — 2016-10-30
• Druggies, e.g. — 2016-05-09
• They're hooked — 2006-08-27
• More than devotees — 2000-10-01
• More than devotees — 1995-07-17
• More than devotees — 1994-07-17