They go fancy. A lot of beads and glitter and colour. Wear what you want and include some really nice scarf. Remember that it's cold inside of the restaurants because of the AC. So something with sleeves will be much warmer and comfortable.
In the festival the most people are dancers and foreigners, so anything is ok. Some of them will dress really clamorous and some of then less.
Don't panic, it's just clothes
I would not buy anything I only would wear on Cairo. Save your money to bedlah.
