I generally side with the airline.
Groundside regulations are there to protect Airside passengers.
If you don't comply with ALL the regulations
... to the letter
... and to the minute
I don't want them to let you on any plane that I'm on.
Or, wait ...
Sorry I'm late, and I brought the wrong passport by mistake,
and I'm a bit p!ssed ...
and there's no time to do full security checks ...
but I have my faded, dog-eared drivers licence ...
.. could you just take these bags packed by my friend's friend, and fast track me onto Jayne's plane, please.
No way, pal ... not unless Jayne gets off first !!!