The same car comes back different every time
A maintenance wash in March and a full interior in October are the same customer and the same vehicle, but nothing like the same job. The record has to hold both.

Auto detailing
Most detailing work is repeat work. The second visit should start with everything the first one produced — the package, the paint condition, the products used and what the customer cared about.

What the work actually involves
A maintenance wash in March and a full interior in October are the same customer and the same vehicle, but nothing like the same job. The record has to hold both.
Presenting a clear package and a credible add-on is most of the difference between a $180 ticket and a $400 one. That needs a service menu, not a notes field.
A booking that runs long does not just cost you that job, it costs the next one. Durations have to be attached to the service, not estimated in your head.
In ManePilot

Questions
Yes. Each service can be marked as shop, mobile, or either, and the location context stays attached to the appointment.
Service history and job notes stay attached to the vehicle record, so the coating, the pad or the film used on the last visit is there on the next one.
Related
Set up your services once, and the schedule, booking page and invoices all work from them.