if you mine and/or herb, you don't have to do a single side quest or dungeon, as long as your doing plenty of mining and herbing, because you get so much damn exp from it. like 1k+xp each node. kill 12 whatever for 6k xp and 20g, or herb 6 nodes for 6k xp, and make 10x the gold selling it. If you don't mine and/or herb you'll have to do some sidequests, but certainly not every one.
also the alternative for the leveling is dungeons, side quests and fill the bar quests that just feel like looong grinds. I did it a few levels on one of my alts, it was probably technically a little faster to level, but ugh I'm gonna stick to the normal leveling of all my alts.