Is there a dress code for the shows at the facility?

Not that I ever heard of, however, being appropriate depending on the show (e.g.: DSO, FSBT) are traditionally more formal than attending Hot Tuna. Use common sense and you can't go wrong.

There isn't a formal dress code. As others have stated, you can dress however you feel. You can choose to dress appropriately on an event by event basis.

Nope, no dress code from what I remember.

I've always attend during holiday concerts. We were always pretty dressy though I think casual for other events would be fine.