To add to that.,
Most places give "Florida Resident" discounts, some even give specific to where you live.
When I lived in Key West I paid different prices than tourists for a lot of things. Back then I was a smoker (gross I know), but just an example my cigarettes were $2 cheaper per pack. Same with Starbucks, jet skis, etc. you had to be an island local to receive those.
When I lived in Ft Lauderdale, then Boca Raton, and eventually Palm Beach, we didn't really get those perks- but, we did always get things like "One way flight free to the Dominican Republic (included in vacation package)",--mostly during the summer months, especially August and September. Also, back before the 2005 hurricanes, there used to be an AMAZING deal from FLL to Biloxi.. Round trip flight, leaving in the evening, 1 night at the Grand, returning early morning. For $79!!!!
Now, I'm 1000 miles away and omg I miss my cheap Caribbean and Central America flights, and Florida resident perks!!
Disney always had a ton of Billboards on I95 advertising their Florida Resident discounts. Even if you live 4 hours away it's an easy last minute weekend trip. Like others have said, Florida residents tend to travel to tourist places during off season..so it helps give a boost during an otherwise "slow" time.