One can extrapolate. We only saw Kirk use his quarters because it was a cost saving measure rather than building or redressing another set to serve as his office.
That's true, but also: Kirk used his quarters to meet and question people (Harry Mudd, Captain Christopher...) because Kirk was based on Horatio Hornblower, who couldn't dream of having an office aboard a wooden, sailing warship.
Hornblower's quarters not only had to double as his office, the room was literally dismantled, hastily, every time the ship went to general quarters (what Star Trek calls red alert). The order was "Clear for action!" and they meant it.