I feed Steph anywhere and everywhere. The only time I get a bit, hmm, not nervous, but I guess I conceal it a bit more is when there are elderly men around. Don't know why, maybe because they remind me of my Granddad who was a proper English fellow, and probably would not have approved of that. However, I feed her quite freely and happily in front of my in-laws, both of whom are a very proper English couple!
I once walked from one end of a shopping centre to nearly the other feeding Steph, and although she was covered (only cos I didn't feel comfortable where I was), I was getting my own retaliation comments and actions ready to any silly soul who decided to have words. To my surprise, there were no comments.
One lady in our local shopping centre said to me "oh, breakfast time is it?" (in a nice way), and I replied "no, close, second breakfast". That's about the only comment I think I have got on it. The rest I haven't heard.