Hello. We are US passport holders. We have one-way award tickets on QR from the USA via DOH to CAI.

Our return tickets are EK CAI-DXB-IAD with a stopover in DXB for 5 days. They are in first. I know that I have to get us tested (PCR) in CAI prior to boarding the flight to DXB less than 72 hours prior to departure.

The EK website says passengers from CAI have to take another test on arrival. You then have to stay in the hotel until you get the results. The other requirement is downloading the DXB Covid 19 Smart App.

I know we will have to take a test within 72 hours of our return USA flight too.

What I'm really wondering is how are the tests administered at DXB?
Do they segregate all the local DXB customers into one area from the countries that require an additional test upon arrival?
Is there any priority line for first or business? How are the lines? We arrive at 12:25 AM. Would hiring one of the arrival services such as Maharaba help expedite the process?
How long do they results take? What kind of test? PCD, rapid or DPI?

Thanks!