On reading various leaflets on the local attractions I was surprised that few mentioned a disabled concession but pleased that when we arrived all of them offered us a significant discount, some were even half price.

So it pays to ask.
(not one asked for proof of disability although my walking difficulties were evident, my partners disability is less so)
I'm also pleased to report that although some places were just too big for me to see everything (I get tired very quickly) most had made reasonable provision to be accessible.