One thing I've noticed about the older generations, is that they really don't mind if you take it slow. In fact, I think they prefer it that way. With a younger audience, in an instant-everything world, you have to be very quick to the point, concise. However, You do get to take your time and take it slow. If you adopt this slower more laid back and reserved approach... then I have found that generally that warms the older people too you.
For example, I did a book test where I memorised the entire book (it was borrowed) in front of the person, he was a nice elderly gentleman. I was expecting that he would be bored but I hated the standard book test route of 'mind reading'. I think because perhaps nowadays its easy to blame something on what was omitted or edited out, or what has been skipped- I actually got a perfect reaction from him. It was not at all dramatic as I was 'memorising' the book as you might want to make it for a younger audience, too much drama can put older people off- the example I am talking about, the man was just curious about the way my mind was working.
Obviously no screaming when I could 'proove' I had learned the book, but a hearty smile and awe-struck handshake and some faith restored in the youth and my duty was done. I think thats the thing with the elderly, if you play it right you will be the messiah and there are few more loving than the old, if you conform to what is expected of generalisations then you will have a brick wall built before you so you can talk to that instead, if you break that down before it can be erected, then they are a joy to perform for.
I don't know why, but I have massive admiration for the elderly and I always have. Also though, I also find amongst the extremley sage and caring old people, there are those filled with acrimony and hatred for the youth, for no given reason

... But wouldn't it be hypocritical of me to label that upon old people? Anyhow, my point is that If you have respect for older people and you use your judgement, then they are- as all audiences are with the right stimulus- a wonderful audience and a joy to spend time with. More importantly, the opportunity to challenge perceptions of stereotypes and to inspire a little optimism about the future and show that society is not completley collapsing because its not like it used to be... is you'd be stupid to miss.
''To go wrong in one's own way is better than to go right in another's.'' Dostoevsky's Razumihin.