Some years back I attended a function in Denver anyway all the people were in the Immigration Biz, USCIS, IJs, Lawyers etc. As I expected in such a situation a lot of them had known each other for a very long time, socialised, and it was a job, nothing personal.
One of the reasons, there are others I always think if you are going to have a Lawyer involved you should not fly them in.
Now if you are in a big hole then all bets are off. That is pretty rare.