Grand Ole Opry's Dolly Parton tribute takes an unexpected turn.

January 19: A star-studded lineup honors Dolly Parton. 

Elle King admits to being 'fucking hammered' during her performance. 

Fans and attendees express disappointment on social media. 

Opry apologizes for language, promises to uphold family-friendly values.

A night of tribute turns into a lesson on performance etiquette.