Personally I would rather take a day off from the game while they get stuff fixed than have it crash when the expansion goes live in about 27 hrs (give or take a few minutes). Be patient, let them fix whatever is wrong so it doesn't cause even more problems later. Contrary to popular belief, their techs to have a bit of a clue what they are doing. In the meantime, pretend there is life outside of WoW lol.