I moved a week from January and a week from February both forward to July.

Couldn't believe I got it because it is always staffing dependent, but I put it in the system and it came through.

Helped that I was on the 747 and they were overstaffed, but the system is set up to have you select which vacation you would like to move, so it is definitely legal. If they have the staffing to allow for more vacation to be taken than is currently assigned to annual folks, it goes out in seniority order. (to those who ask)