While there isn't a Tonner Halloween convention scheduled this year, you can save the date for the following event:
A Wilde Weekend
October 5-7, 2012
Seelbach Hilton Hotel
Registration starts tomorrow, June 6, 2012, via this link, and is limited to 200 guests. The cost is $349, and includes and Ellowyne souvenir doll. Additional activities are also planned, which will include Amelia Thimble, Evangeline Ghastly, and Imperium Park's Thea and Phin.
Notes about the Seelbach Hilton: This is where Tom and Daisy Buchanan had their wedding reception in F. Scott Fitzgerald's The Great Gatsby. The hotel appears on the National Register of Hisotical Places, and is rated as a 4-diamond luxury hotel. Room rates are $149 per night when you mention 'Wilde' while making your reservations.