Nope. The dunes is dead.
Nowadays, we do Field of Valor and Grounds of Valor.
First is outdoors, the second is dungeons.
Basicly, you find a book, choose a page to do (Go kill X amount of this mob), set it to repeat and then enjoy the completion XP/Gil.
Heres a linky to a good list of where to go, for certain lvl spans: http://ffxi.allakhazam.com/journal.html?user=1616793&mid=1310837405323037730
Grounds of Valor (GoV), is usually done in full alliances, or up to that atleast. The XP per mob dont really matter, since its all about killing the mobs as fast as possible, to enjoy the nice Page XP. Thus Page Burn Alliance.