No.
Learn the song you want to sing at home.
Don't practice in public, do it at home and then come out and sing the song when you know the words and music.
Age is no excuse. I'm 68, still know about 800 songs from memory and don't want to endure venues where people don't know the song well enough to sing it from memory.
That's why I rarely go to folk clubs any more, though I used to love them.
My opinion.It was asked for.