I attended
MNSSHP at Disney World on the first night in 2018 and the first night in 2019. As I recall, most trick or treat locations only had one spot where a guest received candy. Only a few had two spots where a guest received candy. I don't know what you are referring to as "trails."
My notes from 2019:
Trick or Treat locations were on the map this year (unlike last year):
- The Bypass (when you entered the park you could walk behind a building in an area usually closed)
- Carousel of Progress
- Cosmic Ray’s
- Monsters Inc
- Mickey’s Philharmagic
- Pinocchio Village Haus
- Ariel’s Grotto
- Railroad station in Fantasyland
- Splash Mountain
- Near Splash Mountain
- Country Bears
- Jungle Cruise
- Tortuga Tavern
My notes from 2018:
- Main Street USA near Tony’s Town Square Restaurant
- Next to the Jungle Cruise
- Next to Pirates of the Caribbean in Adventureland
- Country Bears Jamboree in Frontierland
- Next to Splash Mountain in Frontierland
- Next to where you get the raft for Tom Sawyer Island in Frontierland
- Columbia Harbour House in Liberty Square
- Mickey’s Philharmagic in Fantasyland
- Pinocchio Village Haus in Fantasyland
- Near Under the Sea in Fantasyland
- Near the Barnstormer in Fantasyland
- Near Tomorrowland Speedway in Tomorrowland
- Near Carousel of Progress in Tomorrowland
- Monster’s Inc. in Tomorrowland (I got candy at two places the first time I went, at three places the second time I went)