The customer picks his detailer
Each detailer has his own calendar, services and days off.
The same afternoon, twice. The first customer arrives 15 minutes late.
Back to back
Every car after him waits 15 minutes
With 15 minutes of margin
The margin absorbs the delay, the next car goes in on time
Each detailer has his own availability and his own list of services, but the business has a single booking link. The customer picks the service, then the person and the time.
Three detailers, mostly short washes, three bays' worth of hours a day. Four no-shows and two unfilled cancellations in an average week.
hours of bay time lost each week
washes not done over a year
of that recoverable with reminders and a waitlist
An illustration, not a measurement. Your own numbers depend on your service lengths, how many drive-ins you take and how consistently reminders are used.