To clarify the posts about difficulty, it's really not that it's difficult, it's just unforgiving if you aren't on top of booking. If you call as soon as they open at the start of your 180 day booking window, you have a fair chance of getting the table. There is only one reservation per night, as others have said, but all you have to do to get it is be the first caller. You'll only be competing with people who have long enough trips to overlap with yours. If you're booked for 10 days, then the 10th day of your trip is guaranteed to be available first thing in the morning, so it's all up to timing on your phone call.