We tried to go to Hershey Park. We got about 75 feet from the entrance, when my daughter suddenly felt ill. It was all in her head. She was afraid I'd make her go on Fahrenheit.
We did drive through Gettysburg around New Years. I then downloaded Ken Burns' series on the Civil War and watched the parts about Gettysburg. It was interesting after seeing the actual sites.
If you do ever decide to go hit up the park again, I strongly recommend getting a day pass during a school day. It's a ghost town and you can hit every single ride without a pass. Either right before school lets out or just after school begins, during the week.
There are some rides that are so dead, you can just stay on them as long as you want.
We got there at 5 PM on the Sunday before Halloween. It was a beautiful, warm, sunny day. You couldn't ask for better weather at the end of October. And my daughter didn't want to go.