We are flying EK in full fare F class BCN-BKK-SYD-CHC-DXB-BCN and I've tried to find out both on this forum as well as from the local ticketing office where the tickets were bought about fast track assistance in BKK.

The local ticketing office said "normally on arrival F and J get fast track" - what BS that word "normally" is, OMG. So they basically are saying usually yes, but sometimes no. I've yet to fly with them but what I've experienced is the worst F class pre-flight service of any airline. They seem to think F is just a better seat and meal on board, but before you board you're on your own....

Anyway, I digress...Then they also said that I/O customers are taken directly from the lounge to the plane in BKK.

Some forum member posted a comment about I/O customer a while ago and I'd sent them a PM to ask what it means but they never replied.

Can someone please tell me what Emirates means when they say "I/O customer".