We went on a Saturday for lunch without reservations
We were there at lunch during the week and didn't make a reservation. We were seated right away.
Yes, to be sure there aren't any parties/groups
I think during the week the wait time is less. I made a reservation months in advance, but it wasn't necessary. We dined on the 3rd floor!
You don't have to but you can. We have just stopped in a few times and gotten in fine.
We were just there three weeks ago and we had to make reservations!
Yes especially in season
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