Now that I think about it, the busiest fiesta zones I see are Jelly and Personas, mostly for grinding to TM 120 for 3rd job or Personas, grinding the TM you need after 3rd job.
Both of which can be substituted by Nora Sewer quest, so I don't really mind the Fiesta change too much.
Diablo III North America Glacea#1307
League of Legends Queen Nimera, Level 20
New Leaf/Pokemon XY 4511 - 0825 - 1589