Guessing ~150+ people with ~100 bikes, a lot of beer to be drunk, and need of a sound system.
Another suggestion is https://www.facebook.com/pg/shillibeers/photos/?ref=page_internal which has a courtyard for 100's of bikes and a large "private" area if we don't book the whole place out.
Stops serving at 11
Site says 12 pm (think they mean 12am) on Sat so within the party time frame reqs.
@Crop started
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Another suggestion is https://www.facebook.com/pg/shillibeers/photos/?ref=page_internal
which has a courtyard for 100's of bikes and a large "private" area if we don't book the whole place out.