They post this experience close in, never seem to have it way in advance.
I've been trying to book this for two years for our Labor Day trip and always seem to miss it. We ate at FF last Sat. night and I noticed that they did have a date posted for the previous week that the dining line never mentioned that I would have been able to do. I spoke to a guest relations person for Boardwalk restaurants and she told me that the dining line often shows booked when they have openings. I was told one date in August didn't fill up until a few hours before the event, apparently no one knew about it much in advance or that there were still slots open.