A good solarium, polite and attentive staff, there is a selection of creams, good prices, clean and cozy, all conditions for getting an excellent tan are present.
I am the most loyal customer who understands that fakups happen to everyone, but why does the salon not have such a value as customer orientation. If your lights are turned off, but you warn the client about it in the form of a call or SMS. Who cares if you don't have enough charging on your phone and so on? If light outages are common in the city, have additional chargers in the form of powerbanks. We don't live in the Stone Age. If the employee is not coping, hire an assistant. I'm sure there will definitely be girls who want to earn extra money. The salon is clearly in demand, so make it a pleasant visit or, in case of force majeure, make sure that the client does not have a negative experience.
On the plus side, I can say that the employee is polite and apologized.