As determined by Disney, "A" attractions were the smallest or least popular, "B" attractions were more popular and/or more advanced, and "C" attractions were the most popular and/or most advanced. In 1956, Disney introduced the "D" designation for the
most popular attractions and upgraded several former "C" attractions including
Jungle Cruise to "D"
In June 1959, amid the completion of Disneyland's first major expansion, Disney introduced the "E" designation for the park's
most popular attractions and made the new
Submarine Voyage,
Matterhorn Bobsleds, and
Disneyland–Alweg Monorail "E" coupon attractions. Additionally, the
Santa Fe & Disneyland Railroad, Rocket to the Moon, Rainbow Ridge Pack Mules, Rainbow Mountain Stage Coaches,
Mark Twain Riverboat,
Sailing Ship Columbia, Rafts to
Tom Sawyer Island, and Jungle Cruise – all previously "D" rides – were upgraded to "E". "E" remained the highest attraction/coupon designation for over 20 years. Several "E" attractions were added throughout the 1960s and 1970s. In 1971 the coupon system was duplicated at the
Magic Kingdom when it opened.
The coupons had a face value for use on rides, with an "A" ticket worth 10c, "B" 15c, "C" 25c, "D" 50c, and "E", 85c. This meant one could ride any ride if the ticket or a combination of tickets met or exceeded the value of that ride, so one could overpay an "A" ticket ride with a "B" ticket or higher, or present an "A", "C", and "D" ticket together instead of an "E" ticket.