My opinion on the difference of FL Seasonal Pass vs FL Annual Pass.
Seasonal is Cheaper, has some large Blackout periods (Not just Christmas, most of the summer is blacked out), and you still have to pay the $10 parking fee.
Annual is more expensive, good for the whole year, and you don't pay parking fee.
I personally own FL Annual Passes because I do go during the summer and for every holiday.
I have a friend at work, who has a family of 5. He buys one AP to take care of parking and the rest of the family gets Seasonal Passes. So they don't go during Blackout, but its cheaper this way. $10 a trip for parking adds up, if you go a lot.
BTW: I did have to surrender my NY State Driver's license to get my FL Driver's License, when I moved down last year.
Have Fun!
Cindy