do you have to leave the park early on Halloween Party nights, if you've purchased a Day Ticket?

Yes, you do, if you purchased only the regular park ticket. The Halloween Party is a separate ticket, and they will make you leave if you didn’t get one. They typically sell out the Halloween Party nights weeks in advance, so you may not be able to purchase one close to whatever day you are going. Oh, and they are $95 per ticket if you are thinking about trying to get one and they aren’t sold out on the day of your visit.

No