To add to ExpatSomchai, Mrs. Dirty and I have been in that situation before when they simply assume her profession and start talking to her in Russian... This is Bangkok after all and the most frequent answer will be the one first thought about by front desk staff (when you hear hooves...)

When I first came to BKK I had to live at JW. When I left for work at 0430 hrs I was the only individual leaving the hotel at that time not wearing a short black dress!

Let's be honest, if that's the worse communication issue you have in Bangkok, you've got a humorous story to tell everyone back at the office.