I can only speak to this from an AP perspective. Once you buy the resident AP (we did it online), you take the barcoded order form to Guest Relations. They checked our ID's. If you have FL driver's licenses, that is good enough to prove residency- if you don't, there is a laundry list of other stuff they will accept to prove resident status on their website. Other than that- I cannot speak to other available resident admissions, but hopefully others will chime in. My guess is this will not work, as Disney isn't in business to lose money, and I would assume they have checks and balances in place to assure that this situation doesn't occur.