It can be hit and miss, I'd go with the advice above of admitting you know it's only one guest but as well mention you'll stay out of the way in the family area at the back (if you don't know where this is, it's all the way at the back of the lounge with its own hotdog and popcorn stand). In no way condoning stereotyping of any sort, but if it were me going up I'd approach the south east asian females at the counter and not the arab males