If you're going to go during the busy times you should make reservations, otherwise you can just walk in, I would suggest going when it's not busy, you will have a much better experience, that's what I did.
Walk in. You may have to wait a few minutes
I always make reservations, but usually no more than an hour or two in advance. And I've always had excellent service, even when the place was crowded
Either
Just walk in
I think reservations are suggested.
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