Test a limited extension before changing the permanent schedule. Record transactions, staffing, preparation and closing time for the added period. Ask whether the new hours serve customers who could not otherwise visit, or simply move orders from a busier part of the day.
Staff feedback matters. A quiet final hour may still delay cleaning, stock work or travel home. Include those effects when reviewing the trial. For an appointment business, compare completed bookings rather than available slots. For a retailer, watch whether the longer day weakens service during the established peak. Decide in advance what result would justify continuing. An experiment with a clear review date allows the owner to change course without turning a temporary test into a permanent promise that no longer makes operational sense.