I remember the days of the ticket books you got at both Disneyland and Disney World. A, B, C, D and E tickets. A tickets got you on the dinky rides, like the Carousel. E tickets got the really good rides.
Disney Land originally cost $1 to get in, with tickets for the rides being sold inside. Then, they went over to the ticket books, which cost $1.50 to $2.50, depending on age.
In the early 70's, they offered at $3.75 ticket that got you in but didn't get you on rides. That was really good for grandparents who weren't going to do any rides anyway but wanted to see the kids enjoying themselves.
My experiences with Disney World started in 1976. I can also remember when you got a ticket on a string that you had to hang on your shirt in order to get on the rides. That didn't last too long. People lost their tickets right and left.
Now, you have to sell at least one of your kidneys to afford to get in.