From www.wdwinfo.com

Fire on roof of Little Mermaid attraction at Walt Disney World
Feb 13, 2014

The Journey of the Little Mermaid at Walt Disney World's Magic Kingdom closed briefly on Thursday night for a small fire on the roof. According to Reedy Creek Fire, sparks from the fireworks landed on foliage on the roof and caught it on fire. Witnesses say the fire spread to the rockwork, but crews were able to put it out with a fire extinguisher.

There were no injuries and the ride was quickly reopened.