damnlines for iPhoneLive lines & push alerts — freeGetdamnlines.comA five-time NY State Brewery of the Year (2021, 2022, 2024, 2025, 2026) known for its rooftop taproom in East Williamsburg.
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Time Out New York flags Grimm's rooftop as the taproom's primo seating and warns it "will, no doubt, be crowded on a nice day" (Time Out New York). The guide's explicit advice is to "go during the week," cautioning that "nice weekend days are a zoo."
That leaves weekday visits as the reliable way to get rooftop seating without a wait, while sunny Saturdays and Sundays draw the heaviest crowds, per the same Time Out guide.
Patterns as reported by press and regulars — not measured by damnlines.
Walk-ins: Walk-in taproom
No specific wait times are reported, but Time Out New York describes the rooftop as crowded on nice weekend days, calling them "a zoo," and recommends weekday visits instead.
Not established by available sourcing.
Yes — it operates as a walk-in taproom, though rooftop seating gets competitive on busy weekend days, per Time Out New York.
Sources: Time Out New York - Best Beer Gardens and Beer Halls in NYC