any food will give you 3 % exp increase, even a simple abricot, I would suggest to use that at least to 50 even beyond is some help. Your FC will activate a buff that will have you gain exp as well all that added in Aurum Vale will have you gain around 350K exp per run if you do full run meaning you empty the place totally from all mobs. Unlike another player that told you not to do this, I would advice you to do it, is great place to learn a few things. Hunt log (bestiary) will give for each class up to 50 a gain of exp a way to gain exp, which is not negligeable. I am not much into fates but each to their own. MSQ, you got your answer one post or so above this present one.
Actually, you could run Arum Vale up to lvl 51 if not 52 is STILL the best place even at that level to get fast EXP (relatively fast EXP).
Good luck
