K.T.
Hey N.:)
As far as thawing, here's what I went by: best to thaw in warm/hot water (running water does it faster), never boil, never microwave. You should use thawed milk within 24 hours, and you should not re-freeze.
As far as nursing in public, I think we should be considerate of others as best we can. Going to the car or planning your outings around feeding times is just fine. I think there was only one or two times I had to nurse in public (not counting airplanes), and honestly, I don't think anyone even knew! Once, I actally just stayed standing up and held the baby horizontally. My shirt covered the top, and my arms covered my exposed belly. I just looked like I was rocking her. Obviously, I tried to find a corner of the store where no one was around. For me, there was just the moment of latching on, that was kind of dicey, but it goes quick, and you get better. Practice at home when you can. Mostly though, I think when it just has to be done, you'll soon adopt the attitude of "Just get over it, people!"