Depends on the kashrus. Badatz Eidah Chareidis will not give a hechsher on a store open past a certain time at night to prevent socializing. There are also table limits, if I recall correctly. Many town Vaadim will insist on certain standards of dress, and will not allow Internet cafes or sleazy dance halls. Other hechsheirim are just on the store or restaurant, some barely so. To give a hechsher on a makom pritzus is highly inappropriate. the whole point of a hechsher is to say, “You can come here and eat sin-free”. Clearly there are limits as to what a Vaad or kashrus can or will do. But a certain basic dress code for the staff can be required.
National kashrus agencies tend more to be for the food than anything else. They have to serve a wider clientele, and are in no position to make such demands. They see their job as preventing treif, not enforcing other areas of halacha. They may also be hampered by policies set in place back when kashrus wasn’t as widely observed.