A specific service area reduces wasted visits
A Dubai campaign can reach people across a large city with long travel times between districts. A visitor from an area you do not serve may click, read and leave. The report then shows a low conversion rate, even when the offer is strong for the right districts.
For example, a mobile car wash that covers only Business Bay and Downtown Dubai gains little from visits in Al Barsha. The visit costs the same, but the visitor cannot book.
Your page can list the districts you serve near the top, and the brief can record them as the target area. This works because people outside the area leave before they fill in a form, and your team spends time only on leads it can serve.