The new arrival: registration first, groomer second
If you have just landed with a pet, resist booking a groom for day two. A relocated animal has been through crating, cargo and a strange new home; give it a week or two before adding a bath and a stranger with clippers. Use the time for paperwork. Dubai requires dogs to be microchipped and registered with Dubai Municipality; Abu Dhabi handles registration through its government services under ADAFSA oversight; Sharjah and the northern emirates have their own municipal rules, often stricter about dogs in public spaces than newcomers expect.
Keep the vaccination card from your import paperwork accessible — reputable groomers ask to see current rabies vaccination at minimum, and that is a green flag, not an annoyance.