In my family's recent experience, (Fri and Sunday) you will know which desks but they won't start the check in process until 2 hours before. it's a bore if like me you turn up about 2 hours ahead as the queue is very long by then. only one line for club/priority which included 48 PAX plus all the status holders. In fact the non-premium queue went faster. I was way back in the queue and was waiting about 35 minutes to drop my bag. The only good thing is that they do let Club (not sure about OWE) fast track through security. The other fly in the ointment is a very very long queue at passport/border control which you have to go through to get to the gate. Was quite long when I was there on Friday (10 mins) but really bad on Sunday for the rest of my family.. So make sure you leave plenty of time to get to the gate otherwise it can be very stressy.. apparently, on Sunday a lot of people were getting very upset and shouty. Good Luck! :-)