Traffic here does not stop at ten, and the site is the only thing awake
A round the clock hospitality economy means a real share of your inquiries arrive when the office is dark.
Casino, resort, airport and hospital schedules put a large number of valley households on hours that do not match a marketing template. Their free time to deal with the house is late at night or early in the morning.
Design for that visitor explicitly. Late traffic converts on self service. If the only call to action after hours is a phone number that rings out, you have built a site that hands your competitor the job.
Give the page a form that works without a conversation, and if you can, a scheduling tool that lets someone hold a measure slot. Confirm it instantly by email and text so the visitor knows something real happened.
Then say something honest about response time. Not a promise you cannot keep, just a plain statement of when someone will actually get back to them. Certainty is what stops the search from continuing.