"A" ticket rides.... Yeah, I do recall that but, for whatever reason I recall the phrase "E ticket ride" for that level of excitement...
No! You're exactly right! I actually woke up this morning thinking about my mistake.

It was Disneyland and when you paid for your entrance you got a book of tickets. They started with A tickets and you got a wad of them for things like the trolley that goes down Main Street. The Robinson Family Treehouse was maybe a B ticket. You got about 5 E tickets which were good for things like the Jungle Cruise and Haunted House.
I had a bunch of used ticket books for a long time but I've lost track of where they went. They had tons of A & B tickets but no one ever left Disneyland with an unused E ticket 'cause there just weren't nearly enough of them. ...but then there weren't hour long lines then either.