I'm not a fan of Subway, but they have some healthier choices for kids than other fast food places.
This Subway is very efficient and handles their line quickly.
The tables were kept pretty clean even at lunchtime.
It is odd that you have to ask for napkins. I prefer to be able to just get my napkins when getting my beverages. I am sure they go through less napkins, but if they are that worried about cost control... they should not order imprinted napkins.
I would return if I was in the area with my daughter and in a rush. Otherwise, I think 24 Carrots next door is a better choice for me.