I didn't realize I was a week late in seeing this but just finished watching it. I just don't see how this can work. The other wives are jealous and Robyn is trying way to hard to prove she isn't threatening. I thought it was selfish of him to take such a long honeymoon and also selfish of Robyn to leave her children for that long especially right after such a new event in their lives.
I thought Meri would be the one to clash the most with Robyn but I think it will be Christine. She seems the most bothered by this.