Yes, that is the time period that I just snagged my EI segment for.
I did see an AC option, but the connections time were too tight for my comfort, especially as the first flight was on an RJ later in the evening.
UA options really grim for the days right around Christmas. Seems to open up a bit for the week between Christmas and New Years, but I don't want to wait that long to get started on some vacation time.
While I hate the new award chart for *A First and Business, the lack of UA options are certainly pushing me to experience new routes / airlines. EI and BR on this trip. I will forsake UA Global First for BR Royal Laural...at least that is the impression I am getting from some trip reports.