It's always fun to read everyone's varying experiences!
We absolutely fell in love with LeCellier a few years ago - and now it is a must for us. I prefer dinner only because I love their salmon dish that is served in the evenings. Doesn't mean I'd pass up lunch - they have delicious food no matter what!
We have never been turned away from LeCellier even without a ps. We have gone at some heavy times: Christmas, Easter, summer. I guess we've been lucky!
I have come to the conclusion though - if there is somewhere I might want to try, I make a ps. If we change our minds - I call and cancel it. It helps with stress levels - you have it if you want it, you cancel if you decide differently.