In my experience, the availability of the third hole for all is a rare enough occurrence in kgirl world that pretty much all orgs and ads list it fairly clearly.
With that said, last time BGC did something interesting (and imo wrong) with a girl who selectively allowed Greek. Vivian was getting bad reviews and wasn't a looker. She allowed Greek to some and many noted, so they even kinda advertised it but not really. So what happened was that the Greek part was pumped up, and suddenly she got a stream of mongers coming in. Then she shut it down and denied most people Greek. So it was a kind of a clever pump and dump so to speak. So while it appeared kinda scummy from org side, the ymmv factor was technically there.
I guess tldr is... wording like this could mean selective ymmv . Although a kgirl under 5' offering greek is highly highly doubtful. I do think it's just them trying to play with the theme of flights and so forth