I want singers & musicians with nothing between them & me but air and a few bodies. I will 'make do' with the minimum necessary mics and speakers necessary neutrally amplified to allow me to hear them in the venue. Once the fiddle player reaches for a cord, and the electric keyboard comes out, they will have to be VERY good for me to even remain in the room.

Call me what you will, the music I enjoy most is the older stuff that does not require electronics, and where tune is emphasized over volume.

As to precise definitions, we can quibble forever whether 'acoustic' involves any electricity at all.....I will shrug and be happy if the instruments are acoustic, and made a wee bit louder by simple mics when required.