Found out that the wishes desert party is now booked all the way through October. But they can't tell us when the November date will open. I find it so frustrating that there is no predictability as to when we can book it. Really room for improvement here. I get it if you miss a known time point but this who knows approach stinks.
I agree, that would be frustrating 
I wonder why it's like that?
Ugh! Annoying! 
I wonder why they wouldn't have a set schedule for opening the dessert party reservations like everything else?
January 2020 Trip Report - Riviera Resort
June 2019 Trip Report - Caribbean Beach & Saratoga Springs
October 2018 Trip Report - Contemporary Resort
July 2018 - All Star Movies
April 2018 Trip Report - Art of Animation
Jan 2018 Trip Report - Port Orleans Riverside and Animal Kingdom Lodge
Nov 2017 Trip Report - Boardwalk Villas
Feb 2017 Trip Report - Port Orleans French Quarter
Apr 2016 Trip Report - Pop Century
Dec 2015 Trip Report - All Star Sports & Saratoga Springs
Sept 2014 Trip Report - Coronado Springs
Oct 2012 Trip Report - Caribbean Beach Resort
If it were any other company I could expect a little issue. But Disney doesn't usually have issue with setting dates to collect money on a regular event.