Yes, I was in a BFS, and I cant sleep without a fan. I brought a little travel fan, and although it was kind of nice having it, I did not need it. You will have noise from the AC, tree frogs, waves, and sleep like a baby!!
I've needed noise to get to sleep for almost 4 decades. I used to use a fan all year round because that's all there was. Now there are much better solutions. There are electronic noise machines all over the place these days. I use the "white noise" setting on most of them. The best ones have a larger memory, so it doesn't sound so repetitive. The best one I've had is from Brookstone and was a bit pricey. However, for traveling (including to Couples) I use a cheap one I got at Wallmart. If you don't like electronic noise, Sears used to make one that was a little fan in a very small plastic housing that pushed the air through holes. It was mechanically adjustable. They called it "sleep-mate". I take a noise machine everywhere, but need it most when in hotel rooms in Manhattan. Sometimes when sleeping in ocean front accommodations, I just open the window and listen to the surf (even better), but everywhere else I use a machine. I wouldn't rely on any hotel (including couples) to provide a noise source.