From my own observations delays are not entirely a problem caused by check in staff at Dalaman or any other airport.
I have had delays which I blamed on airport staff but not many.
There is the group of passengers,anything from 4 upwards, who do not seem to know which item of luggage is their own. The shuffling of luggage among them to ensure individuals are under their weight allowance. The missing member when passports are required.(Gone to the toilet).
The ones who cannot find their passport or return tickets.
The group who turn up with luggage of a size of which would not look out of place in the average bedroom as a chest of drawers or a small wardrobe and are then are surprised to find that they are overweight.
Passengers who turn up with unusual hand luggage such as a 10' x 4' rolled up rug,3' diameter brass coffee table or on one memorable holiday a 4' long scimitar. This bloke was really upset when they took the sword but returned the scabbard to him. The rest of us were relieved.
I know my weight restrictions on flights and keep to them,I look after my passport and tickets. Why can't the rest of you do this?
Just in from the pub.
At the moment it is very cold,raining and it is another 19 days before I get to Calis.