There is a restaurant that my family gets take out from on a regular basis. I have been going there more often lately, and I noticed this new girl working there. There are several good-looking girls there; in fact, I would love to date any of them. This girl in particular seems to be a waitress but also a few times she welcomed me when I walked in. She said, "Welcome to [restaurant name]"; I said, "I'm picking up." She then gestured me over to the area by the cash register.

The next time I went, she said the same thing, and I averted my eyes this time and kept walking. I felt extra shy that time.

The difficulty of the logistics is that it is a very crowded restaurant around dinnertime, when I show up there. Even if it wasn't busy, I'd be nervous. Another thing is that the owner/manager is working alongside the staff and would probably frown on any non-business interactions. The amount of time it would take to warm her up and make her comfortable with me doesn't seem possible.

Is my best bet doing a sit-down meal at a non-busy time of day? If so, how would I make her comfortable to give me her number? If I'm rejected for any reason, would I have a chance with the other girls?