Since the 1950s, E Ticket (or E ticket ride) has referred to an unusually thrilling, interesting, most-interesting, or most-expensive situation. It derives from the tickets used at
Disneyland and Walt Disney World theme parks until 1982. Park-goers bought tickets in different denominations, from A through E, with E tickets being the most expensive and reserved for the newest, most expensive or popular rides and attractions.
Tickets could be purchased individually or in booklets, with the purchased booklets including tickets of each category. A book may contain, for example, a park admission ticket, one A ticket, one B ticket, two C tickets, three D tickets, and three E tickets. Booklets tended to have more high-level (D and E) tickets than lower-level tickets like A and B. People tended to leave the park with A and B tickets not because they had received large numbers of them, but because the A and B rides were less common and less popular.