Like many hobby-related terms, this is very subjective.  I've been asked that, and it's something I find difficult to answer without being specific/explicit.  

If your idea of "open-minded" means you want to show up in a lacy teddy and perform a dance routine to a medley of Cher hits, with me using a vibrator on myself while watching you.... then yeah, I'm open-minded.

If, however, "open-minded" means I'll do things that my profile here actually says I WON'T do.... then no, I'm not open-minded.  LOL.  

 
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.....since alot of it is PR & buzzwords.

As anything else in real life everything that is said on an advertisement should be taken with a grain of salt that it is NEVER going to be the whole 100% truth

It means we won't judge, and we might try something new, but it doesn't mean we'll go beyond a certain comfort level. Most people have a better time if everyone is on board with what's taking place, so why would you want to go beyond the boundaries anyway? Reviews complain of women who aren't into it, so find someone who is.  

No matter how open-minded we ladies are, it's not likely we are in to EVERYTHING. For some "interests," you'll have to look a little harder, and other activities may require an established relationship or an increased comfort level, so this is also a ymmv area.

I would take that as "ask for what you want, I won't judge, and I might be into it!" No doubt communication up front pretty much solves this.