My favorite moment at WDW, was at Gay Days, when a vacationing gay couple of male teachers, had a large girl scout troop very curious about them, on the boat launch and shuttle that went from Hollywood Studios to the Boardwalk at around 11 PM at night. After a fun dialouge between them, the teachers and the girl scouts started sharing various songs to sing while they waited for the boat, and continued in song after everyone boarded the boat.
The mood went from sweaty, tired and exhausted, to laughing, silly, with many on the boat singing along. When the captain reboarded the boat, he was perplexed to see a boat full of smiling, laughing and singing passengers so late at night. All the passengers laughed at his perplexed reaction.
It was a great moment !