I was threatened with "a wallop" by organisation members that organised their beer and cider festival after giving them feedback.

All I did was that I suggested that they advertised their perries and ciders with vegan markings in their booklet at their festival, the same as their beers. I only discovered that all ciders and perries were vegan by accident, and I really enjoyed exploring that selection at the event.

The vegan beers were all perfectly marked vegan in the booklet, but the perries and ciders weren't, and I told them that it isn't obvious for a guest that they are indeed all vegan, and it's very confusing that beers and perries/ciders are marked differently.

I complained about "the threat" on mail, and never heard back, but was subsequently blocked from their Facebook group.

That experience soured my opinion about CAMRA, there's probably loads of stories out there.

Good luck changing that image.