Well, there's always the guy with a 2 hour connection who has to deplane first...

Long ago indoctrinated in the haze grey system in which boarding and deboarding of Admiral's barges, Captain's gigs, and officers' Liberty boats was an careful evolution of rank and date thereof ("Seniors first, boot ensigns last), I've never had any problem accepting the logical norm, deplaning by row starting with row #1, and if it's my day in the barrel back in 62F, stand by to wait.

Nota bene:

Emplane and deplane are fine and fitting terms, brief and unmistakable.

Confusion exists over the more nautical terms. Board and the rarely used "deboard" apply in maritime connotation to small boats or brief periods aboard a ship. Embark and disembark (along with infrequent debark) refer to the beginning and end voyages.