For anyone who has not visited St. Augustine or The Villages it would be a great thing to do when the party is over and heading back North.
Augustine has restaurants and shopping second to none.
The villages, dittos, plus a wonderful atmosphere and more custom golf carts than anywhere in the world.
Titusville too but I know many are aware of there and have experienced that.
For those who want to extend the stay it is entirely too close to the Keys to turn back now. There is another complete change in climate waiting for you just south of Key Largo.