The new arrival who just got keys: activation and the first-week walk-through
Your first week is the only window where every defect is unambiguously the landlord's. Walk the property with a cheap plug-in socket tester, press the test button on each RCD to confirm it actually trips, run each water heater, and flip every light switch including balcony and bathroom extractors. Dead sockets, missing switch plates, flickering fixtures and RCDs that do not respond to the test button all go on the snag list before you move furniture in front of them.
One more new-arrival trap: the UAE runs on 220–240V with British-style BS 1363 three-pin sockets. Appliances from the UK, Europe or most of Asia are fine with at most a plug change. North American 110V appliances are not; they need a step-down transformer or they will die quickly, sometimes taking the circuit with them. Loose universal adapters carrying heavy loads like kettles or heaters are a genuine fire risk and worth replacing with proper plugs in the first week.