I have a different question about EXP, specifically the rested bonus. Is there an upper limit to how much you can accrue? I made a couple of alts a while ago (to try the different early-game quests) and right now they're just sitting around unused while I complete the game with my main character. So they should have a few months' worth of rested bonus, but is it infinite or do I need to be using some of it up?