Maybe you’ve heard the phrase that “Practice is Personal” meaning that learning a song and preparing it on your own time is what is expected before people come to rehearsal. That is something that I’ve always felt was essential to helping make a rehearsal go smoothly and therefore Sunday more likely to be distraction free and more fun and meaningful for everyone involved.
For years I made this part of our expectations for being part of the team and told new members about it. Over time I found that telling people it was their responsibility to come prepared only had a nominal effect until one day I had a “lightbulb” moment (cue Despicable Me).
I had told people they needed to practice on their own personal time but never explained what preparing to practice exactly that meant, looked like or how to do it.