The drivers wait outside the exit where the EK luggage belt is, which is usually the closest exit to where the EK flight arrived. You could check the baggage carousel number and then walk out that exit. I cannot remember the numbers exactly, but EK usually uses gate 20, 21, or 22 and you just walk straight up the terminal to the closest immigration and then out past the closest luggage carousel. I had luggage both time I did this in the last month, but without luggage will be easy also.