I haven't half tried & I'm almost 93. I was just running through, exploring & falling through the world for a long while because I couldn't progress in the quest lines. Then I playing around in the solo dungeons dying quite a bit on my less than stellar geared lvl 92 self figuring things out.
I didn't use any potions, didn't go back and grind anywhere. Seems to be moving along at a decent pace. Then again I cut my MMO teeth on EQ1 and no leveling seems so slow as hell levels did there so...