Crandon Park Marina at 4000 Crandon Boulevard, Key Biscayne, FL, is a Miami-Dade County facility asociated with Crandon Park Beach. They do take transients on a space-available, no advance reservations basis. Located on the eastern shore of Biscayne Bay, the location looks very inviting.
Crandon Park Marina
I’m surprised that no one mentioned this marina which is about due east of Dinner Key on the other side of Biscayne Bay, on the northern end of Key Biscayne. I have kept my Sabre 28 in the mooring field there for over 10 years with no complaints. I know they accept transients, if they have available moorings. You can hail them on VHF or call them at 305-361-1281. The only downside is, it is not convenient to restaurants or food markets, although there is a store at the dockmaster’s which sells soft drinks and sandwiches, as well as a fuel station.