One thing I can't get my head around is where people stand at the check in counter for a long period.
maybe someone can shed some light on this for me

JASON
Nice thread, Jason.
This is an issue on human behaviour which light has rarely been shone upon.......and only recently have psychologists begun to unravel this mystery.
First of all; the incredibly complex workflow:
1. Approach Counter with Passport (and possibly visa), Ticket(s) printout and reasonably sized luggage.
2. Depart 60-75 sec later with Boarding pass.
Second: The protagonists.
1. Humans who were not meant to fly.
Third: How to identify these people?
1. Anyone who sets up camp at the check-in counter with legs akimbo, body and arms leaning forward onto counter, and body weight lowered into passive/aggressive posture. (These people are not going anywhere quickly; in fact scientists suggest that even if they were processed quickly, they would still not depart the counter until they had consumed what they felt was a pound of flesh commensurate with their ticket cost)
2. Anyone who has a bag(s) which requires a luggage trolley.
3. Anyone who approaches check-in with a surf board, guitar, parrot, samurai sword.
4. Anyone dressed in religious robes, tribal robes, singlet, bare feet, wedding gown.
Fourth: Possible solutions to avoid being trapped behind these people.
1. On-Line check-in
2. Business/First check-in
3. Single line theory. If there is one of the above protagonists at the only check-in counter and you are the only person waiting in line, then to have the protagonist depart the counter you must actually leave the line and move precisely 23 metres away. Stay close enough so that you can quickly return (if he departs), but do not let the protagonist sense that you are waiting for him to depart. If he detects your strategy then he will entrench himself further at the counter. Only if he feels safe to leave (and that he could come back to the counter and not wait in line), will he actually depart the counter. This is a high risk strategy, but the risk/reward might be worth it if you have a heavily embedded counter-clogger.
Best of luck out there.