I was there this past February. I and a friend did Big Cyprus, Everglades and Florida Keys. We did a loop (map attached), started at Marco Island, finished in Florida Keys and then took the ferry back to our vehicle in Marco Island. Ferry was not cheap, but without it a loop would have been impractical. (Everglades was in and out, but the rest of the trip was a loop.) The ferry was unlike airlines, rarely full, thus we could make our reservation to finish the trip on short notice which was nice. We are retired, thus our end of trip date could be open ended based on convenience and weather. On the map the campgrounds are listed by the first night we stayed at each by date. We got free parking in Marco Island at the ferry company, but check with them first if you do something like this.

The private campground I stayed at on the east side of Key West cost something like $99 for a tiny patch of gravel next to a dumpster. I think it was called Boyds. Not many other choices. We planned to stay in Key West area for two nights but with the high cost we bugged out after the first night.

Stayed at a private campground on Key Largo, less than $50. They do not have a sign on the main highway so you have to know where you are looking to find it. Key Largo Kampground and Marina. (Photo attached.) We thought this was expensive, but this was our first campsite on the Keys, we eventually figured out that it was not too expensive. But state parks were clearly a better deal.

We stayed at many state parks in the Keys. My touring partner lined up those campgrounds by calling the campgrounds before the trip and finding out which ones would have campsites available on short notice for cyclists, and he then called the specific campgrounds roughly a day before we arrived. I do not remember which campgrounds we stayed at but from the map (attached) you might be able to figure out which ones. We are retired and took our time, so several places we stayed at for an extra day if we could.

One state park had wood platforms for us to camp on, my tent was not self supporting, so that was a hassle, but I survived. Had to use twigs jammed in between the planks as tent stacks. (See photo.)

We also stayed at a hostel in Florida City, that was nice and affordable.

There are two main grocery store chains, Publix and Winn Dixie. From their websites I figured out where they were and put their locations into my GPS before my trip. It came in handy for planning when to stock up on groceries.

Very very flat, the only hills are the approaches to the bridges. I do not think I ever used the granny gear on my triple.

I attached a few other photos too. The cyclist in the fog photo was in the Everglades, I do not know if it gets that foggy in the Keys. That was the only non-Keys photo I attached.