If you want to prevent bookings being confirmed a certain amount of time before the arrival date, you can use the "booking time zone" setting.

This can be found under Options > Settings on the General tab, down the bottom. 

The time zone offset works backwards from 12 o'clock midnight on the day of arrival to determine the cutoff for booking confirmation. In the example shown in the screenshot below, we have set the offset to 14 hours:

This would mean that bookings would not be confirmed after 10am on the day of arrival. (14 hours before 12 o'clock midnight)

If you wanted bookings to not be confirmed after 12 midday the day before arrival, you would set it to 36 hours.
This can be a bit mind-bending, so feel free to open a chat conversation with any questions.

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