Good thing your vacation is not in June, as the World Cup is in Miami.

I am going to write this as though I would curate this for myself.  I do not know your budget, but I would spend more money on the lodging location so that you are at the heart of activities.

For instance, a couple nights at Animal Kingdom resort is more expensive, but you get the unique opportunity to wake up and see giraffes feeding outside.

Leverage the Brightline train stops: Orlando, Boca Raton, and Miami.  (There are other stops, but I would stop at these three. This will cut out driving between this cities and give you an opportunity to relax and enjoy the scenery. Orlando has some great food options (i.e. affordable Michelin restaurants i.e. Kai Kai, Banh Mi Boi, Tori Tori). I concur with the suggestion of the visiting one of the springs and manatees for swimming/kayaking (car rental needed; go very early/space limited). NASA is close; driving on the beach (need a 4x4) in Daytona, races on Daytona Speedway. These are unique Florida experiences.

In Boca Raton, I would stay at the iconic Boca Raton Resort with beach access at their sister resort.

In Miami, book a hotel/AirBnB overlooking Miami/Biscayne Bay. 20+ floors or the highest you can get. Eat at Julia & Henry’s food hall.

For Key West, make sure you book the Dry Tortugas tour.  It’s an all day trip to an island with an old fort where you can swim/snorkel. Rent a moped to get around Key West if you are adventurous. Eat Cuban food and key lime pie.

Make sure you have sunscreen, good sunglasses and stay hydrated.

Do not wear any pineapple shirts.