Imagine if you can do all these and manage all these in a marketing plan? Systematic, organized, well thought, innovative and captured all your pertinent business information, don't you find having a marketing plan is useful for your business?
You need to define your location with a description of all advantages and disadvantages. I would include the operating hours and scheduling in this section. You must develop a unique selling point for your business. You will need to provide details about every product/service that you provide and give their features/benefits/values.