I am flying Aeromexico for the first time in February. I booked a normal economy seat through my companies travel portal and my Skymiles account was add while booking. I can see the flight in the Aeromexico account and I was able to select the exit row at no extra cost, but I see no other signs of the additional benefits. For example, how will I be able to use the Sky Priority line when checking in at Mexico City. Also do Gold Medallion/Sky Team Elite Plus get checked bags for free?