When I arrived on one of the CAI-DXB services in F about 5-6 weeks ago, there was a buggy waiting to take F pax only straight to the PCR testing location to give us priority. There was no additional service (like this meet and greet people speak of), but it was certainly quite helpful to have someone take me right to the PCR testing (I wouldn't really have been sure where I needed to go in this case).
For what it's worth, even though on a mileage redemption in F, I was able to get chauffeur drive (in a business class car, not First) back to my hotel in Dubai on arrival. Nothing pre-booked however, and no chauffeur service from my DXB hotel to the airport in F (though my excellent hotel offered me this with their compliments).
Things change all the time, however, especially with an airline like EK, so I find if you go in with no expectations, you may be pleasantly surprised, or you may still be unpleasantly surprised when they occasionally find a way to make things go wrong in ways that defy the expectations even of someone without expectations!