I don't know about current wheelchair procedure (you might want to email Guest Services to ask about that), but Disney security is not like TSA at all. First, security CMs are friendly (!). And we've never been asked to remove any jewelry, belts, shoes, etc. There are little bins on the side of the metal detectors for a purse, wallet, keys, cell phone (basically whatever is in your pockets). You get everything back as soon as you go through the detector.