Okay, an E-Ticket ride is a reference to the days when Disneyland had ticket-books for the rides. You’d buy a package of tickets in book form, and the tickets were of A through E ticket. A tickets were mild things like the streetcars or omnibuses on Main Street, on up through the E tickets, which were more exciting things like the Matterhorn or Pirates of the Caribbean. So an “E-Ticket Ride” is one that’s exciting or worthwhile. You’re welcome, young people.