gnomey In Al Mourjan there is buffet dining and a bar up the staircase to the right as you enter and a Deli through the doors way down on the left. these are both open 24/7.
You appear to be at the lounge towards the end of the evening rush when the lounge has been very crowded but will be less crowded by the time you get there. The lounge is barely signed so you need to keep your eyes open!

The Premium class security lines are in the middle of the security halls and are usually quite fast.