Take it from somebody who flies a lot:

Theorycrafting about the best way to load/unload a plane is pointless.

Bring a bottle of water on your plane. Bring some headphones and make sure they are charged. Make sure if halfway through the flight you even feel a little like you need to pee, do it in flight.

When the plane lands keep your headphones popped in, and chill out until you're off the plane.