The closer it gets to Halloween, the busier it gets. So do check their website as suggested.
Parking is at the Philadelphia Zoo, I recommend getting your ticket on line, you save $7....$13 online $20 at the event....the Ghost Bus picks up every half hour both ways....I believe it opens @ 630 pm......you wont regret going, had a blast!
Take a look at their website easternstate.org to see ticket prices and times. They do sell out so m make sure you get the time you want.
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