I'm having the same problem - we're there from March 4 to 9 and there isn't a single lunch or dinner time for any party size for the entire length of our stay. I have reservation finder alerts set up on Touring Plans for either of our last two days and haven't gotten any notifications at all. But someone on the March thread does have reservations for the 9th and 10th, so there were at some point ADRs available for at least part of the week. It is hard to believe they're fully booked, all day for several days in a row, though, especially since when I was looking there were still times open during Presidents' Day and Easter breaks.