Icey, I didn't corroborate OP's complaint, my experience is the opposite. Maybe there are some regional differences, but the way you describe Cuban chicks is in no way reflective of what we see in south Florida. I don't do a lot of strip clubbing when I travel, but occasionally I do. I'm not gonna comment on the other areas cause I don't spend enough time doing it.
Going back to the OP's original comment, I want to add that translators are not perfect. Especially when it comes to nuance. It's very possible to interpret the google translation of nude as bare, which could easily be thought of as topless, if topless is the norm at that club that's a very plausible explanation for that specific scenario. You might have to try to be even more explicit or say things two different ways to confirm. If it's specifically a nude dance, you could try something like writing "completely nude, without panties or a bra." Or point to her panties and say something like "posible quita estos" quita is pronounced like key tah and that very roughly translates to can you remove these. It's absolutely trash Spanish, but if you say it like that I'm sure she'll understand what you want & she won't start thinking you know how to speak Spanish.
The pointing approach could be another way remove the doubt. The translator isn't perfect. They've got different words for panties in different parts of Cuba. The chicks from the more rural parts are probably gonna call them blumers but the ones from the cities are more likely to call it a tanga. Google translates it to bragas. Chances are they'll understand any of those words, or even the word panties in Spanish is correct, albeit spelt without the e. But for example, coher can mean take as in take a drink, but can also mean fuck as in sexual intercourse. And joder will translate to fuck, but the Cubans use it more like nag, bug, bother. No fuck and no bother are obviously very different sentiments.
If Ron's reading, maybe he can include some tips in his Spanish for mongers article. If you didn't read his first one, check it out.