Various actions have a chance to drop keys for Tan Lines, here are some examples:

Bronze Key (Common):
- Tricia Fail to Relax
- Stewie Use Tanning Bed
- Mayor West Criminalize Bathing Suits

Silver Key (Uncommon):
- Connie Go on Spring Break
- Carter Bully Bellhops
- Seamus Stare at the Sea

Gold Key:
- Dr. Hartman Prescribe Fresh Air
- Brian Read Snobby Cultural Travel Guides