Most S FL swingers agree that

Trapeze in Ft Lauderdale is by far the most accommodating, upscale and friendliest club in the land.  

If you are Spanish-speaking, you may like Miami Velvet, as well. It's very large and a nice club, but it does cater primarily to the Latin population here.

Hedonism is a small club that has a following, but it's considered an also-ran.  

If you're intending to go as a single guy, be prepared for sticker shock-- all of the clubs charge a big premium for you. It's much more reasonable to go as half of a couple. I'm known for my swing date, and many hobbyists have lost their swing club cherry with me!

I hope this was helpful! Have fun, whatever you decide