Oversized vehicle parking is $20, but any vehicle with 15 or more passengers gets to park for free. (Source: Hersheypark web site)
Not sure but I think it's $20
Busses park for free and the driver gets an envelope of coupons. I think it even includes a free ticket to the park.
Per Hershey site "Buses, limos, and passenger vehicles with 15 passengers or more park for FREE"
20$ Yet more than 15 is free
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