They have a version of a GAC, but you have to go to guest relations every day that you are there as they will only issue it for one day at a time.
With the card if there is 3 or less in your party (or its quiet) you will be allowed on to the ride asap, but if you have more people or long lines you will be given a time on your card to return, then you ride stright away.
I found the park is best anti clockwise.....less hills, but still some.