I am flying from Beijing to Amsterdam tomorrow and checked-in as soon as it opened. Economy was only maybe 30% full but I figured many people were like me and did not want to pay for an advanced seat assignment so that would not last long. KLM assigned me a middle seat automatically so my first instinct was just to move to one of the many open areas, but I really hoped to get my own row. I decided to pay the small fee to move up to the paid seats, thinking that was the best chance I would have to keep the seats next to me empty.

Now that check-in has been open for almost 12 hours I decided to check the seating chart again to see how full Economy has become. However, when I pull up the seating chart it no longer shows any availability in Economy - it only shows me the seats that are in my paid section or will cost more.

Is the Economy section really completely full? Or does it blank them all out because I paid to move up? I know this is a trivial thing but on United I could see seat availability for every cabin all the way up until a few hours before the flight, so I was hoping to have that same option here. I tried booking another ticket to see if they'd let me view seat selection in advance but I don't see that option. What does everyone think? Thanks!