Wikipedia says, "The phrase E ticket (or E ticket ride) refers to an unusually interesting, thrilling, or expensive experience. It derives from the admission ticket system used at the Disneyland and Magic Kingdom theme parks before 1982, where the E ticket (officially termed "E coupon") admitted the bearer to the newest, most advanced, and/or most popular rides and attractions."
So I say, thanks, Wikipedia, for explaining what the hell this song is supposed to mean:
Nothing I am, Nothing I dream, Nothing is new. Nothing I think or believe in or say.
Nothing is true. It used to be so easy,
I never even tried. Yeah, it used to be so easy.
But the last day of summer never felt so cold, The last day of summer never felt so old.