Friday nights and the weekends are super busy, so I will recommend you to take reservation about 5 hours beforehand. Going without reservation will take you about an hour of wait.
For us party of 7.5 (baby) took almost an hour on a Sunday. Go early!
They do not do reservations, it is recommended to show up early and close to opening to ensure you get a table and do not have to wait.
I would call today and see if reservations are available, they get very busy (understandably!). If you are just walking in and put your name in about an hour in advance they will text you when your table is ready too.
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