My 180 days was Monday and I was not able to call until after work, around 5:30pm. I got every restaurant on the day I wanted, for the meal I wanted. I got CRT for dinner within 20 minutes of my requested time (although I think breakfast and lunch are tougher). La Cellier was a bit tricky, but I snagged a very late dinner there on the night I wanted- had I asked about other days I'm sure I could have gotten an earlier time!