Comment by googlexa1

How do you know that? Seatmap are not a reliable indicator - I made this mistake once to board a full flight to India (idea was to save on assigned seat) - many people booking will not be assigned a seat until checkin. The information your OTA or bespoke corporate travel agent has is no different to expertflyer, seatmap bad indicator and for availability you'll only see a max of 9 in each bucket..