If you want your web store to work easily and smoothly for customers you need to take into account all the factors including delivery convenience. One of the most efficient ways to make your Magento store user-friendly is to supply it with the Delivery Date for Magento 2 extension:
With the use of the module, you can give your customers a possibility to choose days and time of delivery, to write delivery comments. As for you, it allows for excluding dates from your delivery calendar (the days when the shop delivery doesn't work Sunday, for instance), specifying the delivery date look on the frontend, setting delivery intervals.