If you're flying in/out of FLL you should make at lest one dive at Blue Heron Bridge. It's free, and no boat needed. That's an amazing site and super easy (less than 20' deep). You can see starfish, octopi, various fish, nudibranchs, stingrays, and I've even seen a manatee there once. It's very time dependent so check the tide table (you can only do it at slack tide). I recommend hiring a guide from one of the local dive shops. I've had good experiences with both Force-E and Pura Vida Divers in that area and would recommend either. There's a newish "blue heron bridge scuba" shop that I think is onsite. I've done a boat dive with them once, and they were fine. Might be easiest logistics for rentals.
Tide Table: (so you can pick a time) https://ucd0b5c496995fa48372863f5e0...QDXKkUNbW3zovqz2Z16vTZis1qCw4PCBwv4KKdN-/file
Blue Heron Bridge Diving and Tides | Force-E Scuba Centers
Blue Heron Bridge Scuba - The Best Shore Diving in the Americas - Blue Heron Bridge Scuba
Pura Vida Divers : Discover South Florida SCUBA Diving - Florida SCUBA Diving at its BEST!
The location is actually at Phil Foster Park. Free parking, showers, restrooms.
Tide Table: (so you can pick a time) https://ucd0b5c496995fa48372863f5e0...QDXKkUNbW3zovqz2Z16vTZis1qCw4PCBwv4KKdN-/file
Blue Heron Bridge Diving and Tides | Force-E Scuba Centers
Blue Heron Bridge Scuba - The Best Shore Diving in the Americas - Blue Heron Bridge Scuba
Pura Vida Divers : Discover South Florida SCUBA Diving - Florida SCUBA Diving at its BEST!
The location is actually at Phil Foster Park. Free parking, showers, restrooms.