At DL and WDW they have special event tickets for Halloween and close the park early.
Planning a trip to Tokyo DL and Seas at the end of September and I understand Halloween decorations will be up by then. Unable to see the even calendar this far in advance, so wondering if any knows if they will have special event closures that will affect our time in the parks. Visiting SEP 22 - 24.
The only hard ticket Tokyo Disney does is for New Year's Eve. The rest of the special events is included in your daily admission and part of the regular park hours.
I went last year in September and had the chance to check out the Halloween fun. They ran the Halloween parade twice during the day at Tokyo
Disneyland, the regular afternoon parade and the Tokyo Disney Electrical Parade Dreamlights at night. Expect to have a constant flow of entertainment at the park, similar to how WDW and DL used to do it before parties took over.
At Tokyo DisneySea, they had villain meet and greets at the entrance of the park during the day and a special daytime show in the Mediterranean Harbor. That show was amazing and I had the chance to meet Captain Hook, Gideon (Pinnochio's villain cat), the evil witch and Captain Jack Sparrow. The longest meet and greet wait will be for Duffy and his friends.
Food and special merchandise is a huge part of the events there. Later this summer, the japanese website will post the special restaurant menus for Halloween.
Edit:
I just checked the crowd calendar for your dates and heavy crowds are expected at both parks.
Second edit:
I just checked the temporary closures during your trip and I am sad to report that Journey to the Center of the Earth will be closed. Over at Tokyo Disneyland, Jungle Cruise will close on September 23, so if you want to ride it, do so on the 22nd.