I've had this happen maybe a few times in my life, usually I'm ignored or given a very military-like attitude.
I've never been to restaraunt with a waiting staff alone, always with others. And the times this happened, they acted in such way to only me. I'm not particulary handsome, so I was confused. I'm still not sure if it was a ploy to get money out of me, or if it was genuine friendliness. They knew I wasn't footing the bill, so why go out of their way to treat me in a such a manner and not anyone else I was with?
I don't care if it's dangerous or not...I'm going to town either way.