I looked on some other sites and I saw the following:
"the accommodation that was given to me when i visited hershey park. i was given a piece of paper with the names of all the rides on them. i then went up to the person in charge of the ride and they signed it with the time i showed up and marked down the waiting time for the ride (ie. how long the average wait was). then i came back at the alloted time and rode the ride...yes sometimes the wait was 1-2 hours, but everyone else also had to wait this time frame..then i would go sit somewhere and wait my turn and come back. you were not allowed to sign up for two rides at a time. i felt this was a reasonable accommodation. "
You can see it here:
http://www.hersheypark.com/groups/pdf/disability_guide.pdf
Seems like it is a do-it-yourself fast pass.