Yes
If you're staying overnight and stay at a Hershey property the tickets are discounted and you're get into the park there evening before as well as an early start (sweet start), so you gain extra hours in the park as well!
If you get a season pass then you can show them your card then you will get a discount on food and snacks.
If you live in the midatlantic region of the US, then you may find coupon flyers at businesses such as fast food, convenient stores, and the like. I've seen them at Burger King, Wendy's, Royal Farms stores and the like. Just check at the counters of such establishments. My fiancee found a discount deal after posting on a LOCAL FB group seeking deals.
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