World Showcase has something for everyone. I'm not sure who the belly dancer is for but I'm sure there is someone out there who is really into that.
If you are into belly dancing you'll love this video. It was captured in October 2011 during the food and wine festival.
I'm not sure how often the belly dancer dances outside. I've only seen her in the restaurant in Morocco before but her being outside may have had something to do with the crowd levels. To put it lightly the crowds were insane on the day this footage was taken. According to Touringplans.com it was a 9 out 10. It was wall to wall people.
You can see the video here.