They almost always post when they're out at their brewery. If you're going on a Friday you should probably head in early.
Good for them that they've got so much business that their beer sells out in 2-3 days. I imagine they'll keep adding tanks and expanding if this keeps up.
Here's their FB page
I'm gonna hopefully make a trip there this summer. Because I need a time where I can request to have a Monday off so I can go there for fresh cans.