Well I hope they are decent folks.
My BIL Randy is a great guy, his family is kinda overbearing, but they've backed off over the last few years.
My BIL Steve is alright, he hasn't been around that long so we don't really know him through and through yet. He doesn't have any family in the area, so there's no problem with them.
My SIL Penny is all kinds of insane. So is her family. The women in the family are super hard headed, demanding, and confrontational. The men in the family are all pushovers. They've been married for 2 1/2 years now and the honeymoon is definitely over. My 10 year old nephew (Randy's boy) doesn't want to go to their place anymore because they fight constantly. He even asked his mom if they were getting a divorce. I couldn't care less if they split, but it hurts to know that it affects my niece and nephew so much. Thankfully, they do not have their own kids yet.