I go to WDW several times a year and always make a room request. They are usually pretty general though. 'Top floor close to elevator' if at a Deluxe. 'First floor close to transporation' at a Value. ' First floor Cabanas' at CSR. 'First floor buildings 2, 3, 4, or 5' at POFQ etc. I usually get my requests about 70% of the time. The more specific you are, the less chance you have of getting the request (for example, top floor, corner room, facing the river, building 2)