Defzr..
I flew out on the evening Emirates this week
It was a full flight & the airport was busy but all in all no problem - check in at 18-30 took 15 mins security took 10 mins inside departures again busy with lots of people in the food bars areas - we ate in 1 the food tooled 15 mins
All in all very busy but still was nice relaxed time
Enjoy your flight
Simon