Thought you might be interested in this and it's at the Foreign Correspondents' Club:

Ghosts and Ghouls are in the Air!

The 14th eigoTown/ELT News international party will be held on Saturday, October 30th in Tokyo. Over 300 people, a good mix of Japanese and foreign, male and female, is expected at the prestigious Foreign Correspondents' Club in Yurakucho.

Of course, the theme of the party is Halloween - come in fancy dress and you'll get ¥1,000 off the admission price!
• Date: Saturday, October 30th
• Time: 6.30pm - 9.00pm
• Admission: ¥4,000 (includes beer, wine, beverages, food and snacks)

Read more details here: http://www.eltnews.com/party/