What to wear:
Comfy Flats: you will be walking a lot. Your feet will thank you for wearing comfortable shoes. Mine are Tieks. They aren't inexpensive, but I've had them for 5 years.
Dressy Jeans: I think you wear jeans to work as long as the rest of you looks polished. Dry your hair, add jewelry & make up. Mine are Frame.
Bright Tunic or Blouse: get in the spirit of Florida. No need to wear all black. Mine was a gift from my mom-we bought matching ones a few years ago at C. Wonder (no longer in business). The long sleeves will help with the freezing air conditioned conference rooms.
Some shopping ideas for you below.