How does somebody pay you. How do they book. What arrives in their inbox afterwards. Who answers the phone at four on a Friday. What happens if they need to change the date.
None of it is fun and all of it is the actual business. Walk through it yourself as if you were a stranger, on your phone, and fix whatever makes you wince.
The logo can be a week late without costing you a customer. A booking form that silently fails cannot.