In a corporate setting it's a bit different, since you need to create non-critical sharing spaces where it's okay to share that sort of progress.
But another good answer is to open the door and trust the audience. The people who show up to the garage practice are perhaps not people who show up to buy tickets.
Adopting a scarcity mindset, generally, is a bad idea.
This is one of those (increasingly rare) internet conversations that might lead to legitimately better outcomes in my life.