Guests staying at a Walt Disney World resort are able to book their fast passes 60 days in advance. Guests staying off property are able to book their fast passes 30 days in advance. There are certain attractions in Disney World that have very long lines not matter what time of year you are there. These rides sell out on or before 60 days in advance. Some of those rides are
Magic Kingdom- 7 Dwarfs Mine Train, Space Mountain
Animal Kingdom- Flight of Passage, Expedition Everest
Hollywood Studios- Slinky Dog Dash, Rock N Roller Coaster
Epcot- Soarin, Test Track, Frozen Ever After