For many years, one of the easiest ways to judge how my restaurant was performing was simply to look around the dining room.
If the restaurant was full on a Saturday night, it felt successful. The room was busy, staff were moving quickly, food was leaving the kitchen and the sales figure at the end of the night looked healthy.
But I eventually learned that a full restaurant and a profitable restaurant are not necessarily the same thing.
There were nights when customers would tell me how busy and successful the restaurant looked, while I was standing there thinking about wages, food costs, rent and the bills due in the following week.
That was one of the most important lessons I learned during more than 11 years of owning and operating hospitality businesses.
Revenue is only the beginning
When you run a restaurant, it is very easy to become focused on turnover.
You watch daily sales. You compare this Saturday with last Saturday. You look at how many customers came through the door and whether the restaurant was full.
All of those numbers matter, but they do not tell you whether you actually made money.
A strong sales night can quickly become an average one once you account for additional labour, food costs, discounts, wastage and other operating expenses.
Over time, I started paying much more attention to what was left after the sales were made rather than simply celebrating the sales themselves.
Promotions can fill seats without solving the problem
Like many restaurant operators, I used promotions to encourage customers to dine on quieter days.
They worked. Promotions could increase bookings and fill tables.
But there is an important difference between increasing customer numbers and improving profitability.
If a promotion reduces the average spend significantly, while your labour, rent and many other costs remain the same, a busy dining room can still produce a disappointing commercial result.
The lesson for me was that every promotion needed to have a clear purpose. Filling seats by itself was not enough.
Functions changed the way I looked at profitability
One of the clearest examples came from functions and larger group bookings.
A normal busy Saturday service might involve many separate tables arriving at different times, ordering different dishes and requiring different levels of attention.
A function was different.
We usually knew the number of guests in advance. We had an agreed menu. Dietary requirements were confirmed beforehand. We could order more accurately and roster according to a known number of customers.
The result was often less waste, smoother service and more predictable labour.
A function of 25 or 30 guests could sometimes produce a better commercial outcome than a much busier restaurant full of individual bookings.
That experience changed my thinking.
The objective was no longer simply to attract the maximum number of customers. It was to create business that could be delivered efficiently and profitably.
Complexity has a cost
The same lesson applied to menus.
A larger menu can look impressive to customers, but every additional dish can bring additional ingredients, preparation, training and potential wastage.
The same principle applies to beverage lists.
More choice does not automatically mean more sales.
Eventually I became much more interested in what customers were actually buying rather than how impressive the menu looked.
Sales data became increasingly important when deciding what deserved to stay and what should be removed.
Better information creates better decisions
Running a hospitality business involves hundreds of small decisions: how many people to roster, what to order, what to promote, which menu items to keep and what price to charge.
Those decisions become much easier when they are based on numbers rather than assumptions.
Bookings helped us anticipate staffing.
Functions gave us predictable guest numbers.
Sales reports showed which dishes and beverages customers actually wanted.
Food-cost information showed whether an item that sold well was genuinely contributing enough to the business.
None of these ideas are particularly complicated. The difficult part is making them part of everyday decision-making while also running the restaurant.
What I would tell another business owner
If I could go back and give myself one piece of advice from the beginning, it would be this:
Do not confuse activity with profitability.
A busy business can still be under financial pressure. A promotion can be popular without being profitable. A large menu can offer choice while quietly increasing waste and complexity.
And sometimes a smaller, more predictable piece of business can produce a better outcome than a packed room.
Sales are important. But they are only the starting point.
The real question is what remains after the cost of generating those sales has been paid.
That is the number that ultimately determines whether a business is sustainable.