So I tried to reserve my seats online on the CX manage booking website and they barley had any seats left, except on the very end of the 777-300ER near the toilets. So I thought that all the other seats are taken. Then during a airfare website I saw that my flight had a lot of available seats left.

So what is up with that?

Should I cancel the seats I reserved near the bathroom?, all I really want is a window seat

Also I am traveling with a few others and one person is handicapped, will there be free priority seating for that individual?