We rented a scooter to ride around and went to the park but the road is a bit nasty for driving (easier with a dirt bike) so we walked for a few hours. There's an 8km loop which is nice, you get nice views at all directions. There's a lot of shade but the heat is veey high anyways.
Lovely walk with plenty of benches to rest. The greenhouses are super fun. I did not get to walk the whole garden but the green houses had most of the flowers that were spread amongst the place anyways. Also very instagrammable!
The refuge is accessible only by boat. However, the refuge is administered as part of the National Key Deer Refuge headquartered on Big Pine Key, which is 100- miles south of Miami. The visitor center is located 1/4-mile north of the traffic light on Key Deer Boulevard in the Big Pine Key Shopping Plaza. The visitor center can be reached at +13058720774