Diane - I was also nervous about NIP, I never had before. At the airport after we went through security he wanted to nurse so we went to a gate that didnt have a lot of people and I put the travel system on the side of my, had dh sit on the other side of me, and then used my nursing cover. As far as the airplane I always took the window seat and if there was a side that only had 2 seats, we booked those. Also, if you take an evening flight, its real dark and no one can see you anyways!!
As far as once we were there, the only place I ended up having to nurse was on the beach and we had that little tent so I just layed facing the tent and put a blanket over my back. I say go for it, it was such a nice getaway. Also get what you can when you get there like diapers. My mom just bought a pnp and tub to keep there. Sorry it got so long just thought I'd let you know how it went