The flight in was a very pleasurable experience, v...

The flight in was a very pleasurable experience, very smooth and organised.
The flight out however was a bit of a shambles. We turned up in plenty of time to use the check in machines. You cant scan mexico residents cards so we had to queue up in a never ending queue. Chatted to some other people in the queue while we waited and waited and they all had different experiences, one Dutch guy had been taken from the queue 3 times to use the kiosks only to be told, after it didn't work to return to the queue again.
Eventually they did start to move it along as people's tempers grew and flights drew nearer. We did make it in time but it was much more stressful than it needed to be...
The last thing to remember is that no matter how smiley and polite you are, just about everyone in a uniform is quite frankly rude and has no patience.