Did a search and came up with one of CheshireFigment's old posts answering this in detail:
These are the official rules:
Florida Resident tickets are only available to actual Florida Residents and cannot be purchased for out-of-state family or friends.
An adult Florida Resident may purchase Florida Resident media for more than one Florida Resident from any location that provides an exchange certificate and not an actual ticket.
Children under the age of 18 are not required to provide proof of Florida residency if they are accompanied by an adult with valid proof of Florida residency
If the Guest has an exchange certificate, a valid form of Florida ID will be required when the exchange certificate is redeemed for the actual pass
One ticket only per valid proof of Florida residence (a Florida resident may buy tickets for minors in the party)
Exchange Certificates may say:
"After sale..., may not be transferred except as a gift." This means that the certificate may be given as a gift, so long as the recipient meets the defined Florida residency criteria.
"Purchase and redemption of this exchange certificate requires proof of Florida Residency."
The following items are the only documents accepted as proof of Florida Residency:
* Valid Florida State Drivers License
* Valid Florida State issued ID Card with Florida Address
* Valid Military ID stationed at one of the Florida Military Bases listed below:
(List of bases removed as unneeded)
As of August 20, 2010, Voter Registration Card is no longer an allowed ID
As of August 20, 2010, Florida University/College Student ID is no longer allowed
For Part-Year Residents the following original documents are acceptable.
Note that fax and photocopies are not acceptable, that bills and mail cannot be more than two months old, that PO Box addresses are not allowed, and items related to Time Shares are not permitted.
Must have a driver's license or state photo ID card from another state, or a non-US Passport and at least one of the following items which does show a Florida address:
* Monthly mortgage statement
* Current homeowner's insurance policy or bill, current automobile registration, insurance policy or bill or current utility bill (Power/Phone/Cable/Water).
* Statement from a financial institution showing checking, savings, credit card or investment information or mail from a Federal or Florida State, County or City government agency.
Effective August 20, 2010 Proof of Rent, Mortgage or Ownership such as a Deed, mortgage payment booklet or residential lease are no longer allowed.