Hi, Juliann!
Welcome to the Disney Parks Moms Panel. I hope you are having fun planning your September visit to Walt Disney World® Resort, it's a magical time of year to vacation. You've also come to the right place for help.
If I am correct, the "park hours" you are referring to are for Magic Kingdom Theme Park, if not, please let me know :)
The special ticketed event is for
Mickey's Not So Scary Halloween Party. This festive fall party takes place at Magic Kingdom Theme Park on select days in September and October from 7:00pm-12:00am and requires a separately purchased ticket to attend. Just select the highlighted link above to read more about this spook-tacular event; there's always room for one more fun activity while visiting.
Also during your visit, Epcot will be hosting its annual
International Food & Wine Festival. This tasty event is included in your park admission and offers a platter full of different opportunities for you to enjoy.
I hope this helps, Juliann! Please do not hesitate to reach out to me with any additional questions you may have regarding activities that may be happening during your vacation. I am here to help you plan.
Faith