Thought I'd add my two cents, as I have a FL annual pass for both WDW and USO. At WDW, it is very hard to trick the system and use a FL pass if you're not a FL resident. As someone previously posted, if you purchase a number of FL passes, every single person who will be getting one must be present and must have a FL ID and address to provide. At USO, if you purchase online, you can just print the passes out on the computer kiosks at the front and you don't need to show ID to get them, but I imagine you must input a FL billing addres. For those who have said they needed to present a FL ID at the turnstiles the first time they used the USO passes, this has never happened for me. So I think it is easier to manipulate at USO.