So my MOH is trying to help me wrap up a few details. This particular one being about the day before the wedding. Our rehearsal is scheduled at 4:30pm and the dinner is at 7pm. FI's parents have been extremely gracious to pick up the rehearsal dinner cost for us. They already have everything planned, booked, paid for, and the invitations are already done for it. FMIL worked really hard on the details.So to get to the point, we are throwing out ideas about what the girls want to do the day before the wedding. They decided that they want to get a mani/pedi and we can all spend the day together. I'm all for that! It should be a lot of fun. But my SIL just asked if her and my sis (MOH) can bring their kids to the rehearsal and rd. We have been engaged for almost 2 years. They have known the details for that night for almost as long. Why this is just now coming up, I don't know. I can tell this is going to be a fight. My SIL says she doesn't want to leave their baby at a sitter's two days in a row b/c she will miss him too much. I do understand that. But the rehearsal and dinner are only a few hours. We decided when we got engaged that no kids were going to be at the either the rehearsal/dinner, or in/at the wedding. I don't want to start a fight, but since everything has already been bought and paid for, etc. I don't think its right to go back to FIL's and ask them to pay for more. I don't want to sound like I'm being insensitive here, but this was our decision and we told everyone about this over a year ago. I love both of my nephews so much, but we don't want kids there.I'm sure that this probably sounds awful, but its one of the few things that we have been really stern on. I guess it just bothers me that everyone knew about this a year ago and now we are talking about this again.What would you do if you were us? Again, I don't mean to sound like we are being awful aunts and uncles to our nephews, but we were upfront w/ everyone from the very beginning.