I did a little test to see how much Fiesta downloads/uploads whilst you're online, and to be honest its not that much. Using a nifty program called Down2Home (found
HERE), which monitors how much you've downloaded from the point it starts running, here is the result
after 30 minutes of levelling/grinding/changing maps etc:
1.43 mb
So if you do some simple math, leaving Fiesta on to vend overnight only uses up about 21 MB (thats 7 hours).
Thats good news for those with monthly download limits (like me >.>). Anyway should I sticky this?