Miami Florida is an exciting destination.
I recently went on Halloween and have been there plenty of times.
Hotels and places I recommend you to visit or stay is the Mondrian hotel ( they have Bentley’s that can take you anywhere) , divine and exquisite decoration, really cool pool with party-feeling environment, definitely don’t miss the pool party on Sundays , it has really nice views.
Delano Hotel, an exclusive hotel in South Beach where most celebrities stay when they go to Miami. Maddona and Justin Bieber and many more, have stayed in that hotel.
JW Marriot Miami on Brickell is impressive, with superb views, and private Bowling Track for VIP guests.
If you want a high end mall go to Bal Harbour, you will find the best shops there like Ferragamo, Gucci, Neiman Marcus, etc. Miami Design District, is very exclusive also, very quiet but with great art, and the best shops.
Definitely go to Cvi.che 105 (there are many locations I personally like the South Beach one, at the end of the Lincoln Road Mall) and order a trilogy of Peruvian Ceviches, they are the best in the world, really delicious.
Definitely take a stroll through Ocean Drive, and see all the Art Deco buildings and great environment.
Welcome to Miami, Bienvenido a Miami !