I can understand much of what they say, but one thing did strike me as interesting though. I know for myself I'm already married so this issue is mute, but one of the things the OP mentioned has me wondering.
If you are an author and have a contract with a publishing company and the book is already out and released for sale prior to moving, how would they address that? You are bound by contract legally and the publishers wouldn't pull a book down just because an author moves countries.
Any ideas on this one? Again, I know for me, it won't matter since I will be coming over as a spouse, but the idea did peak my interest.