You should put your store as closed in any circumstance that prevent you to fulfil the orders in a particular day, such as stock take, company D&D, moving of warehouse, your personal holidays, etc.
Please put your store as closed also in case of early closing time. In this case we will be very hard for us to pick up, respecting a shorter pick up window, so we prefer you to close the store and avoid and dissatisfaction for our customers.
Do set your closing dates as early as possible, especially when you know them in advance.
Learn how to set your closing dates here.