Acuity: Custom hide calendars with no appointment availability

I have a set-up with over 60 calendars per. Most offer the same few services. Because the service is offered in calendars geographically distant, I need users to select the service first and then the calendar. My problem is that if most sites are booked out the user has to navigate through each calendar to find one with availability. I'd like the site to hide calendars once they book out.

I have a powerhouse plan so can so customisations. Has anyone done this?