They have had, occasionally, in the past. But talking to the staff? It became so popular that musicians plus gear inside caised a pile-up of customers outside! So probably not anymore. But check their music schedule.
They have a music schedule on their website. If it's scheduled, it will list open mic there.
Not that I know of but they do have live music so it's possible
Not when I was there but maybe in the evening. Call
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