I have a couple classes leveled to like 30ish on Faerie server, but stopped playing because I had no one to play with ... /sniffsniff
There's no real casual play since you can't get a bonus for doing like a daily dungeon or anything...Not much exp from dungeons either so you gotta FATE grind which is boring as all hell. The amount of grinding needed to be good late-game is insane due to cross-class abilities.
But I am still glad I picked up the game because it's just so freaking pretty!!