Good for you Tony,
A group of us used to do this years ago. It was always good fun.
I do believe you need to learn some old singalong numbers for the older folk. They love to join in . We took a group some years ago now to entertain the older folk. We also thought it would be a good idea to take some crates of guinness along as one of the guitar players worked for guinness, and its considered a nourishing drink.
Well some of the old folk got stocious drunk, sang and danced the night away. { we never took there medication into consideration } Some i heard after slept for 2 days Im not surprised the way they lowerd the guiness.
I still laugh my head off when i think of the antics of them.
Good luck to you.
Old Doll.
Why Blend in with the Crowd ? When you were made to stand out !