Great advice!
The only thing I would really add is to tell them that the child is going to need time. It will take time before you really see who this child is. Time to work through fears, adjust to a family, adjust to a culture and to just learn the language.
I felt that our family was quick to "label" Sam when he came home. Of course his social skills aren't appropriate - he's had no guidance there the last 3 years, etc. I fought very hard against this.
That and having a conversation about him right in front of him like he wasnt there. I stopped that immediately. It's a bad habit to get into and they do learn the language quickly. (and it's just rude!!

)
All the best!
Christina