A customer order needs a status and a message. Ordered, arrived, collected: without those three steps books sit under the counter for weeks while the customer assumes nothing came, and the sale quietly evaporates.
School lists are the real work of late summer. Splitting a class list into named parcels and handing out collection slots is a morning per class when nothing is doing it for you.
Events root a bookshop in its town and are the most tedious thing to run. Sign-ups with a capacity and a reminder the day before turn an evening that used to be a project into something that happens by itself.