Scheduling lawn care customers

I'm starting a solo lawn care business next season and have a couple questions on scheduling. I don't really know what to expect or what customers will expect. Do you allow your customers to dictate what day/time you mow? Like an appointment. Or do you just throw them in the schedule wherever it fits best for you?

Do you try to keep a specific customer at a specific time or just whenever you get to them?

Do you make sure the customer is home first?

Any help from fellow lawn carers is appreciated!