Hi, we are choosing MCE seats on DFW - SCL and 10 and 11 are taken. Looking for best seats for 2. Row 20 window seats are blocked (why?) and we prefer movable armrests and window for leaning against for an overnight flight. Since no window remaining in MCE, Currently booked in 20 D and H, hoping E won’t be taken. Are these fixed armrests and are toilets too close by? Aerolopa shows this as a baby seat. Might we be kicked out? Would a middle row D/H12-18 be preferable?