Where is best place to park there for a few hours?

Anywhere on the street. There's plenty of places to find parking (including their parking lot on N willow) that are not metered.

And there's no requirements to feed the meters after 7:00 p.m.

The Brewery's parking lot, access on Willow St. Or at the NJ transit parking lot a couple feet away or on the street around the building.

Park up the street no meters