was at 95% level 19, completed stage 4 invasion with RAF xp bonus and heirlooms, got 48,315 / 27,300 xp (177%) but still level 20. probably useless but just thought it was cool to try
RAF as a F2P?
And there was an experiment done by Iaccidentallytwink in cata where he got enough xp to fly from 19.99 to 21, was stopped 1xp before 21 though.
Still very nice!