Do unconventional opening hours impact a project?

We can provide teams to carry out research covering early and late opening times if requested by our clients.  To ensure the safety of our interviewing staff, there are different operating conditions which necessitate a higher charge.  Proportionally there are far fewer people interacting with a business at these times, meaning that the cost per response is much higher than those collected during conventional business hours.  This often influences businesses to choose not to interview at these times.