Would you say anything in this situation? Or just let it go?

They are NO going to change at this point in time. I wouldn't waste my breath on them or wait to receive anything from them. They are selfish egotistical people who obviously care ONLY about/for themselves. Don't "allow" them to even upset you as they certainly are not worth it. I'm sure your husband feels bad enuf about them, I wouldn't even mention it to him! Why make him feel bad for his parents behavior. Be thankful he was raised by someone decent as apposed by them. Unbelievable they have not given you a single thing even for your marriage. What totally obnoxious people! Don't allow them to control you or your tho'ts as they aren't worth it. You'd be far better off to pretend they don't even exist!...best to you...:)