Your visitor may be reading this on a break at two in the morning
A hospitality economy that never closes means a meaningful share of the people looking at your site are on a shift, on a phone, and not free to talk for another hour.
The standard mental model of the visitor, a homeowner at a kitchen table on a laptop, describes a minority of your traffic. Plan for a phone held one handed, a screen at half brightness, and somebody who has about twenty seconds.
Give that person something to do that is not a phone call. A short request form that promises a callback in a stated window is worth more than a phone number alone, because he physically cannot talk right now and will not remember you at seven.
Ask when it is safe to call back and give real options, including early morning and late evening. A field that offers only business hours tells a swing shift customer he is not your market.
Every promise on the page has to be one the office keeps. A callback window nobody honors does more damage than no callback window at all, because it converts a hopeful customer into an angry one.