I have a sneaking suspicion you already know the answer to this question.

I don't advertise my kinks to the rest of the world, but I also don't operate under the cross-my-fingers-and-hope-for-the-best wishful mentality that no one other than the people I really want to will ever find out. In all reality, at any given moment one person with a big mouth or one picture could make my private life public fodder.

Simply bambina, assume that people are going to find out. Maybe they won't (Hell, more than likely they won't even come close to figuring it out to the degree you fear), but ASSUME they will and just ask yourself if it's worth it to you when they do. If you can handle a reporter flipping a picture of you in a BDSM club on your desk by grinning and saying, "oh I remember that! It was a stage of exploration in my life that really worked out/didn't work out for me. Now, let's talk about something current and relevant to my work..." then by all means go play. If you think, on the other hand, you won't be able to deal with the attacks then, sorry, stay out of the clubs and away from the events.

Long story short, never gamble with more than you can afford to lose.