The part that tells you how the business is actually going
This is the part that exists today and the reason some venues will move before the booking engine is even finished. It is the reporting, the wages, the brand and the setup.
Four things, all of them working now
What you find out. Which room actually earns rather than which looks busy. Where you are quietly discounting. Whether takings moved because of bookings, group sizes or price.
Reporting that agrees with itself. One definition per number, back as far as you have been trading, and downloads that add up to what the screen says.
Wages against takings. What a booking costs you to run and what an hour of staff time brings in, read from the roster you already keep.
Your brand and your words. Set up by you, at any size, without a design request.
You can run this alongside whatever you are using now
It reads what you already have. So you can leave your bookings where they are, put this beside them, and get a year of your own trading answered properly before deciding anything else.
That is about ten dollars a month for one venue.