When I tried to get Le Cellier for dinner, I could only get lunch. So I called back about 6 times over a few weeks, no cancellations. The CM suggested that I call on the night before the reservation or the day of, as that is when most cancellations happen. Also, it is possible to get a "walk in" as some people do not have the courtesy to cancel their reservation and are just no-shows. So if I were you I would check first thing that morning, but also have a back-up ADR in place at a different restaurant. Good luck