Perhaps you've figured this out OP but if not I'll say it: Anybody good has a waiting list and doesn't need to go to shows/advertise, etc. Most if not all good places have repeat bookings. I walk out the door of my DIY place every fall and say I'll see you next year, let me know when you set your rates, etc.
Given that, you might consider pushing out your dates a few years to expand your pool.
