Wear your most formal, outlandish, skimpy dress or gown, put on as much makeup as possible, get your hair done, and you will still be underdressed. Bring a shawl to cover up when the men enter. Bring 1 QAR notes to throw at the dancers or singers. Don't worry about a gift. Leave your cell phone in the car or check it when you enter. A wedding is an amazing spectacle. It's the most fun you can have with all women and no alcohol.