Your manager may have written a NTC which was less than crystal clear so here's what happens during Ramadan IN ISLAMIC COUNTRIES:
1. Don't eat, drink (inc water) or smoke in public between sunrise and sunset.
2. Those countries which have alcohol bars in hotels will usually open for business after sunset.
3. Hotel restaurants will usually be curtained off and available to non-Muslims during daylight. If they aren't you'll have room service.
It is not a good idea at any time of the year to go out wearing shorts or for the girls to go out wearing short sleeves or no sleeves. Even if tolerated (and in Saudi it won't be) it still gives offence and makes life difficult for the ruler who sanctions it.
Qualifications for above advice? 40 years flying to ME and 4 years living there.