Arabic-first creative: stop translating, start writing
Look closely at most bilingual campaigns in this market and you will find an English idea with Arabic subtitles. The headline puns do not survive the crossing, the casting was chosen for the English cut, and the Arabic version ships as an obligation. Audiences notice in half a second - and they are two-thirds of the market.
Arabic-first does not mean English-never. It means the idea is born in the culture it is speaking to. Khaleeji humour is not London humour with different clothes. The rhythms of spoken Emirati Arabic, the codes of majlis hospitality, the specific pride of a National Day - these are creative raw materials, not compliance checkboxes.
Practically: hire Arabic copywriters at concept stage, not translation stage. Write the Arabic line first and let English adapt to it half the time. Cast for the Arabic read. Test both cuts with both audiences, and be honest when the "main" film is actually the secondary one.
The brands that get this right earn something performance budgets cannot buy: the sense that they are from here, not just sold here. In a market where everyone can reach everyone, belonging is the last real differentiator.