There is no right or wrong answer to this, it depends on the individual and their goals. Once upon a time, SS washes were treated as investments, not businesses. But over the Years in the quest to make more money it seems they have require more and more time from the operator and more of a business.
My friend that has gone cashless treats the washes as investment properties. The operating company pays his real estate company rent, and as long as he gets his expected rent and goal ROI, he is happy and is not too worried about leaving a little money on the table. He uses the surplus funds in the operating company to aggressively maintain and upgrade the properties. His equipment rooms are dry, neat and clean and very simple. The walls are freshly painted. Everything is new. It makes them a pleasure to run.
Admittedly to me it's a lifestyle issue. You can run a couple of washes and do all the little items to add a little site revenue here and there. I had seven washes at one time with no management quality help. That will burn you out. Once you burn out you never regain that enthusiasm for the business you once had. When you tire of the day to day grind you can either sell, hire a good manger (good luck) or modify your business to make it easier to run.I could go card only, get rid of
vending, and get rid of shampoo and fragrance machines. I'm 80% CC now, admittedly some cash customers will leave but those that elect to stay will use CC and the higher ticket average will help compensate. My guess is a 10% drop in revenue worst case scenario. I will recapture a day of my time a week and theft concerns become a non-issue. I could almost leave my
doors unlocked if there's no cash to worry about. Many of the problem low-rent cash only customers and take their bulk of their problems with them. The wash becomes simpler to run and more attractive to an investor type when it comes time to eventually sell.
Along the same lines- For those that do go cashless, it's easier to run more washes efficiently and the time savings might mean adding a wash to your portfolio, which will negate the revenue loss and result in potentially higher net worth when time comes to sell. Would you rather own two washes grossing 150k each , or three washes grossing 135K each (paid for) at the end of your career?