Originally Posted by Zembla

Where everyone else is snaking to the front, you get escorted to the side. This looks defenitely designated, and you get served by the far end officer who is also treating the normal queue. As soon as the immigration booth on the far side is free, it is your turn. So yes, you effectively get to jump the line. Also the immigration officer is aware that you have been traveling in F and therefore got to jump the line. All this happens efficiently and professionally, there are no embarassing situations. After immigration the escort continues until outside the terminal.