Its a shame that things like this have to happen.
From Staff point of view its really annoying when people who think getting on a plane is just like a "bus". There are millions of things that goes on behind the scene.
Also when queing up for Check in please listen out for you flight Number for example say there are people waiting in one line to check in for the following flights:
Entebbe
Amsterdam
Paris
Colombo
Say you are at the back of the que you are waiting for the Amstredam Flight and its near closing time, you should hear and annoncement saying flight BA..... to AMS is closing for check in anybody not checked in should go to desk whatever number.
Please don't come to the front and say i've been stood in this que for say 30 mins.
Also pax with e tickets turn up at the gate and think they have already checked in, when asked for thier seat number they show you 23K ( basically the baggage allowances) it really causes delay for youselfs and other passengers.