Your point about Parkinson's awareness is well made. The Parkinson's UK team do a great job but despite of that and from my experience the general public are very unaware of the problems PD causes and the range of symptoms it produces. They find it difficult to relate their view of your illness to what they regard as the standard symptoms they have in their mind. I must confess I was of the same opinion until I was diagnosed.
My dx was in 2011 and since then a number of times people have looked at me and said "you're not shaking" as if they are not convinced that I have PD. Another thing that people (all well meaning) can't get their head round is that one day they see that you are like a zombie and can barely walk and are shuffling and freezing, then another day they see you walking reasonably well and a different person. This confuses them, even close friends. The switch off, switch on element of PD is little understood.
I don't want to spend time explaining the nature of the beast we have or explaining the range of symptoms - Akynesia, Dyskenesia, Distonia, inner tremor, shuffling, excess saliva, burning legs and facial muscle pull amongst them. It's not fair on the listener.
Another thing with people (all well meaning) is there range of responses, from " I have a friend who has Parkinson's, he goes mountaineering and cycling, you wouldn't know he's got it" to "I have a friend who has Parkinson's, he was in a wheel chair within three months and is now in a bad way".
This forum is great for conveying the wide range of problems PD sufferer's have. The contributors show a remarkable degree of stoicism in spite of their problems and are an example to us all.
Like you Mary, I don't want to know about advanced PD, at least not until I'm approaching my hundredth birthday.
As an aside - 1947, I remember it well, the year of the great snowfall, I was 9 years old and loved it.