I think this is a fabulous post, Jim! I have also recently come back to piano after a long absence. This "oh, go on, play something for us" thing has bugged me ever since I was a child and my Dad would say "well, go on, play something for your auntie" (or whoever). I would play whatever classical piece I was working on at the time, and after 3 bars he would say "no, not that - play something that everyone knows" - and I'd be stuck, and would feel like such an idiot. So here I am now, 30-odd years later, polishing up Maple Leaf Rag for my office Christmas party. I've just ordered the Charlie Brown book, and Tom Roed's Advanced Christmas Piano solos, and I have made up my mind to have up my sleeve a repertoire of such"easy listening" stuff so that I always have something to play, even if my audience doesn't appreciate Bach. And maybe this will appease my husband, who hankers after living with someone who plays jazz and blues instead of the Italian Concerto for hours on end.
Kathryn