One of my projects over the next few months will be putting together a list of belly dance festivals that take place across the United States. I'm focusing on events that happen annually and which include performances, vending and workshops.
You can see the beginnings of the list here: http://deannacameron.com/Festivals.htm.
I've already contacted many belly dancers to try to make the listing as complete as possible, and I have many, many events still to include.
If you want to be sure your festival is included, please leave information in the comments section or email me directly at deanna AT deannacameron DOT com.