I believe in many instances it would be good to able to book more than 3 appointments in 24hrs via the on-line system.
2 immediate scenarios I can think of are:
When setting the booking system up or tinkering with it it’s good to be able to send test emails. Perhaps there could be an on/off toggle for this purpose?
I have some clients who like to plan their maintenance treatments in line with their training schedules which is often done on annual basis requiring upto 12 bookings.