April is always a problem for retailers as it has a few holidays that confuse the public on whether you are open. So Australian retailers must communicate their operating hours on those days to their customers.
The first one is Good Friday, April 7th, 2023. Tell people with in-store signage now if your business is open on Good Friday. This will help ensure that they don't go elsewhere.
Easter Monday, April 10th, 2023, is another one.
Finally, there is ANZAC Day on April 25th, 2023. If you are open on that day, consider putting a picture prominently in your shop of one of your ancestors in military uniform. It will make a talking point.
Also, consider promoting some goods for these holidays; the lead-in to Easter is generally a good shopping day.
Consider how it hurts if you lose business when you are open and the customer goes elsewhere because they thought you were closed.