1. Because the back of the last row of seats is a wall, the stewardess is limited, and the inclination angle of the back of the chair will be smaller than that of ordinary seats.

Advanced economy class is very comfortable, and the front and rear space is much larger, so you can cross your legs. It's worth it for international flights, and it's much more comfortable. Everything else is the same.

3. ptv is also available in ordinary economy class.