All the Single Riders!

On Ken P. D. Snydecast #199: Penultibicentennial Dana mentions the "Single Rider" lines at Disneyland and Walt Disney World.

Ken has him explain the concept and he explains it very well. Simply put, it's an express line and single riders get placed in empty seats in other cars.

Here are a list of attractions where you can go solo:


Disneyland Park
Splash Mountain
Indiana Jones and the Temple of the Forbidden Eye
Matterhorn Bobsleds

Disney California Adventure
California Screamin'
Soarin' Over California
Grizzly River Run
Goofy's Sky School
Radiator Springs Racers

Disney's Animal Kingdom
Expedition Everest

Disney's Hollywood Studios
Rock 'n' Roller Coaster

Epcot
Test Track

Tokyo Disneyland
Splash Mountain

Tokyo DisneySea
20,000 Leagues Under the Sea
Indiana Jones Adventure: Temple of the Crystal Skull
Raging Spirits

Hong Kong Disneyland
Big Grizzly Mountain Runaway Mine Cars
Space Mountain
Toy Soldier Parachute Drop

Walt Disney Studios Park
Toy Soldier Parachute Drop
RC Racer

As Dana mentions, they have "single rider" lines at Universal:

Universal Studios Hollywood
Revenge of the Mummy
Jurassic Park: The Ride
Transformers

Universal Studios Florida
Hollywood Rip, Ride, Rockit
Men in Black: Alien Attack
Revenge of the Mummy

Islands of Adventure
The Amazing Adventures of Spider-Man
Doctor Doom's Fearfall
Dudley Do-Right's Ripsaw Falls
Harry Potter and the Forbidden Journey
The Incredible Hulk Coaster
Jurassic Park River Adventure