The wind blew quite a bit during two weeks at the end of June and early July. This rooted up not only an over-abundance of turtle and manatee grass but also floating Sargassum seaweed. End result was lots and lots of seaweed on the beaches everyday and I imagine some hotels were a bit slower (and maybe not quite as diligent) at raking it up.
Another weather dependent event that may ruin someone's idea of paradise!