After reading some not-so-good reviews on CR in the past, we did not make an ADR for our visit last spring. However, my mother and myself decided to be adventurous and walk in, no ADR. Much to my surprise, we were seated after a short 10 minute wait. The food was great, our server was great (and handsome, to boot) and well...you can't beat the atmosphere. I will say, it ended up being a pricey lunch (near $90, including tip...for two people). But that's because we couldn't say no to a delish afternoon cocktail and of course, dessert.
This is a must-eat for the next trip. I think you'll really enjoy it!