Yep, what they said above

can't get the FL Res tickets if you're not a resident BUT if there is a FL Res discount on the resorts and your in-laws book a room they can also book up to 2 more rooms at that FL Res rate - if that helps you any
Ticket requirements are:
In order to take advantage of the Florida Resident Offers at Walt Disney World you must show proof of Florida Residency:
VALID Florida Drivers License
VALID Florida State issued ID card (MUST have Florida address)
VALID Voters Registration Card with corresponding picture ID
VALID Florida Based Military ID - Florida Military Bases
Pensacola Naval Air Station
Hurlburt Field Air Force Base
Eglin Air Force Base
Tyndall Air Force Base
Panama City Coastal Systems Station (Navy)
Jacksonville Naval Air Station
Mayport Naval Station
MacDill Air Force Base
Patrick Air Force Base
Miami Coast Guard Station
Clearwater Coast Guard Air Station
Homestead Air Reserve Base
Key West Naval Air Station
United States Southern Command (Miami)
VALID College ID (MUST be a Florida college)
9/05: Utility statements are no longer accepted as proof of residency.
Each adult in the party is required to have a Florida ID.
Florida Resident tickets are only available to actual Florida Residents and can not be purchased for out of state family or friends.