We have a very good support network making it easy to settle in. With a corporate move, a lot of the details are taken care of by professional relocaters. We already knew some people from the US who were able to give us lots of "tips" about how to do certain things. The moms at my kids' school are so friendly. I joined the social committee only to find that there was only two English moms on it - for some reason it attracts all the expats (American, South African, Australian).
HG, my kids are still in elementary school, so it has been very easy for them to move. They've adapted well to their English school. My older boy just loves that he gets to play soccer at school during recess and lunch and then actually have soccer coaching as a lesson for an hour every afternoon. I like it because I don't have to be a soccer mom anymore

I worry about the High School years, but we could move them to an American school over here, so I'm not too concerned.